HISTORY of the 7-Zip

--------------------

9.22 beta 2011-04-18

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- 7-Zip now uses progress indicator displayed on a taskbar button under Windows 7.

- The BUG in 7-Zip 9.21 beta was fixed:

7-Zip could ignore some options when you created ZIP archives.

For example, it could use ZipCrypto cipher instead of AES-256.

9.21 beta 2011-04-11

-------------------------

- 7-Zip now can unpack UEFI BIOS files.

- 64-bit version of 7-Zip now includes additional 32-bit shell extension DLL.

So other 32-bit programs can call 64-bit 7-Zip via context menu.

- Now it's possible to associate 7-Zip with file types without Administrator rights.

- New -mf=FilterID switch to specify compression filter. Examples:

7z a -mf=bcj2 a.7z a.tar

7z a -mf=delta:4 a.7z a.wav

7z a -mf=bcj a.tar.xz a.tar

- 32-bit 7-Zip running under 64-bit Windows now can use up to 4 GB of RAM.

- Some bugs were fixed.

- New localizations: Corsican, Kyrgyz, Ligurian.

9.20 2010-11-18

-------------------------

- Some bugs were fixed.

9.19 beta 2010-11-11

-------------------------

- The console version now doesn't show entered password.

- Some bugs were fixed.

9.18 beta 2010-11-02

-------------------------

- 7-Zip now can unpack SquashFS and CramFS filesystem images.

- 7-Zip now can unpack some TAR and ISO archives with incorrect headers.

- New small SFX module for installers (in Extra package).

- Some bugs were fixed.

9.17 beta 2010-10-04

-------------------------

- Disk fragmentation problem for ZIP archives created by 7-Zip was fixed.

9.16 beta 2010-09-08

-------------------------

- 7-Zip now supports files that are larger than 8 GB in TAR archives.

- NSIS support was improved.

- Some bugs were fixed.

- New localizations: Hindi, Gujarati, Sanskrit.

9.15 beta 2010-06-20

-------------------------

- Some bugs were fixed.

- New localization: Tatar.

9.14 beta 2010-06-04

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- WIM support was improved.

9.13 beta 2010-04-15

-------------------------

- 7-Zip now stores NTFS file timestamps to ZIP archives.

- New additional "Open archive >" item in context menu allows to select

archive type for some files.

- Some bugs were fixed.

- New localization: Uyghur.

9.12 beta 2010-03-24

-------------------------

- ZIP / PPMd compression ratio was improved in Maximum and Ultra modes.

- The BUG in 7-Zip 9.* beta was fixed: LZMA2 codec didn't work,

if more than 10 threads were used (or more than 20 threads in some modes).

9.11 beta 2010-03-15

-------------------------

- 7-Zip now supports PPMd compression in ZIP archives.

- Speed optimizations in PPMd codec.

- The support for archives in installers was improved.

- Some bugs were fixed.

- New localization: Kazakh.

9.10 beta 2009-12-22

-------------------------

- The BUG in 7-Zip 9.09 beta was fixed:

7-Zip created incorrect ZIP archives, if ZipCrypto encryption was used.

9.09 beta 2009-12-12

-------------------------

- 7-Zip now can unpack Apple Partition Map (APM) disk images.

- Speed optimizations in AES code for Intel's 32nm CPUs.

- Speed optimizations in CRC calculation code for Intel's Atom CPUs.

- Some bugs were fixed.

9.07 beta 2009-08-27

-------------------------

- It's possible to specify Diff program in options (7-Zip File Manager).

- Some bugs were fixed.

9.06 beta 2009-08-17

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- 7-Zip now can unpack MSLZ archives.

- Partial parsing for EXE resources, SWF and FLV.

- Some bugs were fixed.

9.04 beta 2009-05-30

-------------------------

- 7-Zip now can update solid .7z archives.

- 7-Zip now supports LZMA2 compression method.

- 7-Zip now supports XZ archives.

- 7-Zip now can unpack NTFS, FAT, VHD and MBR archives.

- 7-Zip now can unpack GZip, BZip2, LZMA, XZ and TAR archives from stdin.

- 7-Zip now can open/copy/compress disk images (like \\.\c:) from \\.\ folder.

- 7-Zip File Manager now doesn't use temp files to open nested archives

stored without compression.

- New -scrc switch to calculate total CRC-32 during extracting / testing.

- New -scc{WIN|DOS|UTF-8} switch to specify charset for console input/output (default = DOS).

- Some bugs were fixed.

4.65 2009-02-03

-------------------------

- 7-Zip File Manager now can calculate SHA-256 checksum.

- Some bugs were fixed.

4.64 2009-01-03

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- The bug in 7-Zip 4.63 was fixed: 7-Zip could not decrypt .ZIP archives

encrypted with WinZip-AES method.

4.63 2008-12-31

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- 7-Zip now can unpack ZIP archives encrypted with PKWARE-AES.

- Some bugs were fixed.

4.62 2008-12-02

-------------------------

- Some bugs were fixed.

4.61 beta 2008-11-23

-------------------------

- 7-Zip now supports LZMA compression for .ZIP archives.

- Some bugs were fixed.

- New localization: Sinhala.

4.60 beta 2008-08-19

-------------------------

- Some bugs were fixed.

4.59 beta 2008-08-13

-------------------------

- 7-Zip now can unpack UDF, XAR and DMG/HFS archives.

- 7-Zip File Manager now keeps encryption when you edit encrypted file inside archive.

- 7-Zip File Manager now allows to change current folder from the address bar drop-down list.

- It's allowed to use -t switch for "list" and "extract" commands.

- Some bugs were fixed.

- New localizations: Icelandic, Kurdish Sorani.

4.58 beta 2008-05-05

-------------------------

- Some speed optimizations.

- 7-Zip now can unpack .lzma archives.

- Unicode (UTF-8) support for filenames in .ZIP archives. Now there are 3 modes:

1) Default mode: 7-Zip uses UTF-8, if the local code page doesn't contain required symbols.

2) -mcu switch: 7-Zip uses UTF-8, if there are non-ASCII symbols.

3) -mcl switch: 7-Zip uses local code page.

- Now it's possible to store file creation time in 7z and ZIP archives (-mtc switch).

- 7-Zip now can unpack multivolume RAR archives created with

"old style volume names" scheme and names *.001, *.002, ...

- Now it's possible to use -mSW- and -mSW+ switches instead of -mSW=off and -mSW=on

- Some bugs were fixed.

- New localizations: Punjabi (Indian), Pashto.

4.57 2007-12-06

-------------------------

- The BUG in command line version was fixed: -up3 switch

could work incorrectly.

4.56 beta 2007-10-24

-------------------------

- Some bugs were fixed.

4.55 beta 2007-09-05

-------------------------

- Some bugs were fixed.

4.54 beta 2007-09-04

-------------------------

- Decompression speed was increased.

4.53 beta 2007-08-27

-------------------------

- "Test" and "Info" buttons now work for open archives.

- The bug in 7-Zip 4.48 - 4.52 beta was fixed:

7-Zip could create .ZIP archives with broken files.

- Some bugs were fixed.

4.52 beta 2007-08-03

-------------------------

- 7-Zip now can unpack Compound files (msi, doc, ...).

- Some bugs were fixed.

4.51 beta 2007-07-25

-------------------------

- Bug was fixed: 7-Zip 4.50 beta could not open some .7z archives.

4.50 beta 2007-07-24

-------------------------

- New switch for command line version:

-ssc[-] enables/disables case-sensitive mode for file names.

- Speed optimizations for AES encryption.

- Some bugs were fixed.

4.49 beta 2007-07-11

-------------------------

- 7-Zip now can unpack WIM archives.

- 7-Zip now replaces incorrect characters in filenames during extracting.

4.48 beta 2007-06-26

-------------------------

- Encryption strength for .7z format was increased.

Now it uses random initialization vectors.

- Some bugs were fixed.

4.47 beta 2007-05-27

-------------------------

- Bugs of 7-Zip 4.46 beta were fixed: BZip2 could work incorrectly.

4.46 beta 2007-05-25

-------------------------

- New fast compression mode for Deflate method in Zip and GZip.

- New "Compress shared files" option in GUI and -ssw switch.

- Some bugs were fixed.

- New localization: Norwegian Nynorsk.

4.45 beta 2007-04-17

-------------------------

- Now it's possible to specify the size of solid block and the number

of CPU threads in "Add to archive" dialog box.

- Default dictionary size was increased: Normal: 16 MB, Max: 32 MB.

- Speed optimizations.

- Benchmark was improved (new "b" command in command line version).

- The number of DLL files was reduced.

- Now it's possible to associate 7-zip with combined types like .tbz2

- switch -mhcf=off is not supported now.

- If -t{Type} switch is not specified, 7-Zip now uses extension of archive to

detect the type of archive.

- Some bugs were fixed.

- New localization: Welsh.

4.44 beta 2007-01-20

-------------------------

- Speed optimizations for LZMA, Deflate, BZip2 and unRAR.

- 7-Zip now supports file pathnames longer than 260 characters.

- Some bugs were fixed.

- New localizations: Bangla, Bashkir, Nepali.

4.43 beta 2006-09-15

-------------------------

- 7-Zip now can use multi-threading mode for compressing to .ZIP archives.

- ZIP format supporting was improved.

- 7-Zip now supports WinZip-compatible AES-256 encryption for .ZIP archives.

- New context menu items for .ZIP archives creating.

- 7-Zip now uses order list (list of extensions) for files sorting for compressing

to .7z archives. It can slightly increase compression ratio in some cases.

- 7-Zip now restores modification time of folders during .7z archives extracting.

- Some bugs were fixed.

- New localizations: Armenian, Marathi.

4.42 2006-05-14

-------------------------

- Compressing speed and Memory requirements were increased.

Default dictionary size was increased: Fastest: 64 KB, Fast: 1 MB,

Normal: 4 MB, Max: 16 MB, Ultra: 64 MB.

- BZip2 compressing / decompressing now can work in multi-threading mode

- Multi-threading mode now is default for multi-processor systems

- 64-bit version now supports 1 GB dictionary

- 7z/LZMA now can use only these match finders: HC4, BT2, BT3, BT4

- Compression ratio in Zip/GZip/Deflate in Ultra mode was increased

- 7-Zip now can unpack ISO archives and some installers created by NSIS

- Optional "Flat View" mode in 7-Zip File Manager

- 7-Zip File Manager now can calculate CRC checksums for files

- -x switch with relative paths now affects files specified with absolute paths

- New switch for 7za.exe (console version): -slt.

"l" (list) command with -slt shows technical information for archive.

- New switch: -scs{WIN|DOS|UTF-8} specifies charset for list files.

Default charset for list files is UTF-8 now.

- Some bugs were fixed

- New localizations: Albanian, Kurdish

4.32 2005-12-09

-------------------------

- Bug was fixed: 7-Zip 4.31 didn't work in Windows 95

4.31 2005-12-04

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- Small changes

- New localization: Basque

4.30 beta 2005-11-18

-------------------------

- Files 7zFMn.exe, 7zGn.exe, 7-zipn, 7za.exe, 7zC.sfx were removed from 7-zip package

- 7-Zip now uses uncompressed SFX: 7z.sfx

- Sfx modules 7z.sfx and 7zCon.sfx now use msvcrt.dll

- Speed optimizations in LZMA maximum/ultra compressing.

- LZMA now supports word size up to 273

- 7-Zip now reduces dictionary size for LZMA, if you compress files

smaller than specified dictionary size.

- 7-Zip now can use large memory pages:

GUI: 7-Zip File Manager / Options / Settings / Use large memory pages.

Command line version: -slp switch.

This feature allows to increase speed of compressing.

But 7-Zip can make some pause at starting of compressing for allocating large pages.

Also Task Manager doesn't show real memory usage of program, if 7-Zip uses large pages.

This feature works only on Windows 2003 / XP x64 / Vista.

Also you must have administrator's rights for your system.

Recommended size of RAM: 1 GB or more.

To install this feature you must run 7-Zip File Manager at least once,

close it and reboot system.

- Some bugs were fixed

4.29 beta 2005-09-28

-------------------------

- Bug was fixed: 7-Zip 4.28 beta worked incorrectly in Windows 95/98/Me

4.28 beta 2005-09-27

-------------------------

- Bug was fixed: 7-Zip 4.27 beta created incorrect multivolume archives.

- "Duplicate filename" collision problem between names with ligatures was fixed.

4.27 beta 2005-09-21

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- 7-Zip can unpack CHM/HXS (MS HTML HELP) archives

- 7-Zip can unpack multivolume CAB archives

- Now 7-Zip deletes files to the Recycle Bin by default.

Shift+Delete deletes files permanently.

- Some bugs were fixed

- New localization: Tatarish

4.26 beta 2005-08-05

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- LZH format support (extracting only)

- Some bugs were fixed

- New localization: Ido

4.25 beta 2005-07-31

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- 7-Zip now doesn't interrupt the compressing when it can not

find specified file as in version 4.24 beta. It just shows warning.

- 7-Zip now supports standard selection mode in the file list

- Some bugs were fixed

4.24 beta 2005-07-06

-------------------------

- 7-Zip now supports right-click Drag and Drop in Explorer

- Command line version now supports short file names (like FILENA~1.TXT)

- If there are no wildcard names and there is no -r switch in command line,

7-Zip now checks that specified files exist on disk before compressing.

- Some bugs were fixed

4.23 2005-06-29

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- Drag and Drop support

- 7-Zip File Manager now can copy files from one archive to another

- Some bugs were fixed

- New localizations: Extremaduran, Malay

4.20 2005-05-30

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- No changes

4.19 beta 2005-05-21

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- BZip2 code was rewritten. Now it supports 3 modes: Normal, Maximum and

Ultra. In Normal mode it compresses almost as original BZip2 compressor.

Compression ratio in Maximum and Ultra modes is 1-3% better for some files,

but Maximum Mode is about 3 times slower and Ultra Mode is about 8 times

slower than Normal mode.

- Console version now prints all messages to stdout by default,

and if -so switch is specified, 7-Zip prints messages to stderr.

- Some bugs were fixed

- New localizations: Azeri, Georgian

4.18 beta 2005-04-19

-------------------------

- Bug in v4.17 beta was fixed: 7-Zip File Manager could crash

after some operations with archives

4.17 beta 2005-04-18

-------------------------

- To increase protection from viruses, 7-Zip now does not open

files with more than 4 continuous spaces in the name.

And 7-Zip changes such long spaces in name to " ... " in the file list.

- Code size optimization

- Some files were moved from main package to extra package:

- Plugin for FAR Manager

- SFX modules for installers (7zS.sfx and 7zSD.sfx)

- New localizations: Asturian, Indonesian

4.16 beta 2005-03-29

-------------------------

- Speed optimization (5%) for 7z / LZMA

- 7za.exe now supports .Z archives

- -r- switch in command line now is default for all commands

- Some bugs were fixed

- New localization: Uzbek

4.15 beta 2005-01-25

-------------------------

- Z format supporting (extracting only)

- 7-Zip now can extract ZIP archives compressed with "Shrink" method

- 7-Zip now doesn't interrupt the compressing when it can not open file.

7-Zip just skips that file and shows warning.

- Some bugs were fixed

- New localization: Frisian

4.14 beta 2005-01-11

-------------------------

- 7-Zip installer was created with NSIS.

Now it installs 7-Zip for all users (under Windows 2000/XP).

- Now 7-Zip can create multivolume archives

(switch -v for command line)

- Some bugs were fixed

- New localizations: Breton, Farsi

4.13 beta 2004-12-14

-------------------------

- Switch "--" stops switches parsing

- Some bugs were fixed

4.12 beta 2004-11-18

-------------------------

- Bug in v4.11 beta was fixed:

7-Zip created incorrect ZIP archives if file size was

from 3.75 GB to 4 GB.

4.11 beta 2004-11-16

-------------------------

- 7-Zip now shows file names during compressing/decompressing

- 7-Zip now supports Zip64 extension of ZIP format. So now it's

possible to compress files bigger than 4 GB to ZIP archives.

- Some bugs were fixed

- New localization: Galician

4.10 beta 2004-10-21

-------------------------

- Bugs in v4.0* were fixed:

- Some commands in command line with "-r" switch worked incorrectly,

so 7-zip could skip some files during compressing

- Some other bugs were fixed

- Small internal changes

4.09 beta 2004-10-05

-------------------------

- Bugs in v4.0* were fixed:

- Renaming inside archives didn't work or worked incorrectly

- GUI SFX didn't show extracting dialog at start

- Small fixes in 7-Zip GUI (7zG.exe)

4.08 beta 2004-10-04

-------------------------

- Bug in installer for v4.07 was fixed: when rebooting

is required, it rebooted without asking user

- Small fixes in 7-Zip GUI (7zG.exe)

4.07 beta 2004-10-03

-------------------------

- Big amount of code was changed in this beta version.

So don't use it for important data compressing.

And test archive after compressing.

- Unified command line interface to GUI and console versions

- 7-Zip now can extract or test several archives in one command

- 7-Zip now doesn't interrupt the compressing when file is locked by

other application. 7-Zip just skips that file and shows warning.

Note: previous versions of 7-Zip had bug, so they can not unpack

non-solid and some solid 7z archives with such skipped files.

- Command line interface was changed:

- now it's possible to use absolute pathnames

- syntax simplification:

was: 7z a a Folder1\* Folder2\* -r

now: 7z a a Folder1 Folder2

- now it's possible to use complex wildcard commands, like *\*111*\*

- More smart detection of archive type for files with unusual

file name extensions

- Supporting for RAR archives with encrypted headers

- CPIO format supporting was improved

- For GZip and BZip2 formats you can:

- Compress from stdin (-si switch)

- Compress to stdout (-so switch)

- Extract to stdout (-so switch)

- 7-Zip File Manager:

- Split and Combine commands

- new list view options: Full row select, Show grid lines

- Internal reconstruction

- Some bugs were fixed

- New localizations: Friulian, Macedonian, Mongolian, Tamil, Thai

3.13 2003-12-11

-------------------------

- Some small bugs were fixed

3.12 2003-12-10

-------------------------

- Now you can select compression method, dictionary size

and word size in "Add to archive" dialog box. Also it

shows memory usage.

- 7-Zip File Manager now contains toolbars.

- New "Benchmark" command in 7-Zip File Manager.

It measures compressing and decompressing speeds and

shows rating values.

- Some bugs were fixed.

3.11 2003-10-06

-------------------------

- 7-zip now use limitations for solid block size

for increasing the speed of random file decompressing:

- in Store mode: 0 B

- in Fast mode: 16 MB

- in Normal mode: 256 MB

- in Maximum mode: 1 GB

- in Ultra mode: 4 GB

- 7z.exe, 7za.exe and SFX modules now support Unicode

file names under Windows NT/2000/XP/2003.

7zn.exe and 7zan.exe were removed from package.

- Some bugs were fixed

- New localization: Afrikaans

3.10 2003-09-27

-------------------------

- Drag-and-Drop from external application

- GUI version (7zG.exe) can compress files with absolute paths

- Compression dialog doesn't suggest bzip2 and gzip2 types when

there are more than one selected file

- Optional auto renaming for existing files during extraction

in command line version (-aot switch).

- Some bugs were fixed

3.09.02 2003-09-20

-------------------------

- Optional limitation for solid block size for increasing

the speed of random file decompressing (-ms switch)

3.09.01 beta 2003-09-06

-------------------------

- Automatic compression filter for executable files:

dll, exe, ocx, sfx, sys, (-mf switch)

- Compression levels in 7z now are:

- Fast: 32 KB dictionary, BCJ filter

- Normal: 2 MB dictionary, BCJ filter

- Maximum: 8 MB dictionary, BCJ filter, max settings

- Ultra: 32 MB dictionary, BCJ2 filter, max settings

- Updating solid 7z archives now is supported, if it doesn't

require repacking solid blocks

- -mhcf switch for 7z format now is default

- Some bugs were fixed

3.08.04 beta 2003-08-24

-------------------------

- Favorites menu in 7-Zip File Manager

- Some bugs were fixed

3.08.03 beta 2003-08-21

-------------------------

- Automatic adding of extension to archive name in Compress Dialog

- Some bugs in previous 3.08.* versions were fixed:

- Storing columns width inside archives in File Manager

- Opening archive inside archive

- Quotes in list files in console version

3.08.02 beta 2003-08-20

-------------------------

- Some bugs were fixed

3.08 beta 2003-08-19

-------------------------

- Compress dialog:

- Supporting fast compressing mode (-mx=1 switch)

- Multi-threading option for Multi-Processor systems

or Pentium 4 with Hyper-Threading

- Encrypt file names option

- New context menu items:

- Extract here

- Extract to <Folder>

- Compress and email

- Internal reconstruction, registry using was reduced

- New localization: Esperanto

2.30 Beta 32 2003-05-15

-------------------------

- New features in compressing / decompressing window.

- "Show password" option.

- Some other small changes.

- New localization: Valencian.

2.30 Beta 31 2003-04-29

-------------------------

- Some bugs were fixed.

2.30 Beta 30 2003-04-19

-------------------------

- 7-Zip File Manager:

- Showing .. item.

- 1/2 Panels mode switching (F9).

- Supporting Bzip2 compression in ZIP archives.

- Some bugs were fixed.

- Some optimization recompiling for reducing code size.

2.30 Beta 29 2003-04-07

-------------------------

- 7-Zip File Manager:

- "7-Zip" and "System" submenus in "Files" menu.

- Path history and "Browse" button in "Copy" dialog.

- RAR supporting was improved.

- Some bugs were fixed.

- Small changes in LZMA code.

- New localizations: Hebrew, Vietnamese.

2.30 Beta 28 2003-02-16

-------------------------

- Some bugs were fixed:

- Updating 7z archives that are larger than 4 GB.

- Using anti-items in 7z format.

- Compressing empty files with password to zip format.

- In max mode 7z now uses 8 MB dictionary instead of 4 MB.

- 7-Zip File Manager:

- Supporting file comments: Ctrl-Z.

- New key alias for folder bookmarks: [Shift]+Alt+Number.

2.30 Beta 27 2003-01-24

-------------------------

- Two BUGs in two previous beta versions (Beta 25 and Beta 26)

were fixed:

1. Incorrect compressing to non-solid 7z archive

when files have some very big sizes:

4 GB, 8 GB, 12 GB, 16 GB, ...

2. Incorrect percent showing in 7z compressing

when files are bigger than 4 GB.

- Supporting multivolume RAR and SPLIT archives.

- Supporting DEB archives.

- Supporting old version of CPIO format.

- Some bugs were fixed.

- New localizations: Korean, Swedish.

2.30 Beta 26 2003-01-12

-------------------------

- Supporting Deflate64 method in Zip archives.

- Supporting Rar 1.50 archives.

- Some bugs were fixed.

2.30 Beta 25 2003-01-02

-------------------------

- Encryption feature for 7z format (AES-256).

- New optional archive header compressing mode (-mhcf).

- Archive headers now always are compressed with LZMA method.

- Updating non-solid 7z archives without -ms=off now is allowed.

- Folder creating and item renaming inside archive now is supported.

- Supporting encrypted Rar3 archives.

- Supporting Unicode names in Rar3 archives.

- Some bugs were fixed.

- New localizations: Lithuanian, Voro.

2.30 Beta 24 2002-11-01

-------------------------

- Some internal reconstructions.

- -m switch syntax was slightly changed.

- Some bugs were fixed.

- New localizations: Catalan, Norwegian, Romanian.

2.30 Beta 23 2002-09-07

-------------------------

- Encryption feature for zip format.

- Percent indicating for some operations.

- Some bugs were fixed.

2.30 Beta 22 2002-08-31

-------------------------

- New program: 7-Zip File Manager.

- Command line version now doesn't allow absolute paths

for compressing files.

- New localizations: Belarusian, Greek.

- Bug in FAR plugin was fixed:

Incorrect updating when archive has no explicit

directory items for file items.

- Some bugs were fixed.

2.30 Beta 21 2002-07-08

-------------------------

- RAM requirements for LZMA (7z) compression were reduced.

- Small bug in FAR plugin was fixed.

2.30 Beta 20 2002-07-01

-------------------------

- RAM requirements for LZMA (7z) decompression were reduced.

- New localization: Turkish.

- Some bugs were fixed.

2.30 Beta 19 2002-04-11

-------------------------

- Supporting RAR 3.0 archives.

- New localizations: Danish, Ukrainian.

2.30 Beta 18 2002-03-25

-------------------------

- Compressing speed in 7z format was slightly increased.

- New localizations: Estonian, Finnish.

- Some bugs were fixed.

2.30 Beta 17 2002-03-03

-------------------------

- Supporting ARJ archives.

- New localization: Chinese Simplified.

2.30 Beta 16 2002-02-24

-------------------------

- Supporting RPM and CPIO archives.

- New fast compression mode for LZMA: -m0a=0.

- New match finders for LZMA: bt4b, hc3, hc4.

- Some bugs were fixed.

2.30 Beta 15 2002-02-17

-------------------------

- Compression ratio in 7z was slightly improved.

- New localization: Dutch.

2.30 Beta 14 2002-02-10

-------------------------

- Speed optimization for multiprocessor computers (-mmt switch).

- New localizations: Czech, Japanese, Polish.

- Some bugs were fixed.

2.30 Beta 13 2002-01-31

-------------------------

- New SFX module for installers.

- New match finder for LZMA: bt3.

- New localizations: Portuguese, Portuguese Brazil, Serbo-Croatian.

- Some bugs were fixed.

2.30 Beta 12 2002-01-16

-------------------------

- Bug was fixed: memory leak in Beta 11.

- New localization: Hungarian.

2.30 Beta 11 2002-01-15

-------------------------

- Archive testing feature for GUI version.

- Now 7-Zip can use more than 256 MB of RAM in all Windows versions.

- New localizations: Bulgarian, Chinese Traditional, Latvian, Slovak.

- Some bugs were fixed.

2.30 Beta 10 2002-01-11

-------------------------

- Bugs were fixed:

- Updating 7z archives in Beta 8 and 9 didn't work.

- Unicode version in Beta 9 didn't work in Windows NT4.

- Some other bugs were fixed.

- New localizations: Arabic, French, Italian, Slovenian, Spanish.

2.30 Beta 9 2002-01-08

-------------------------

- Program localization: English, German, Russian.

- Additional optimized versions of programs

for Windows NT4/2000/XP.

- Two new match finders for LZMA: pat3h and pat4h.

- Some bugs were fixed.

2.30 Beta 8 2001-12-21

-------------------------

- 7-Zip now supports some zip archives that were not

supported by previous versions.

- 7-Zip now supports new state (-uw switch) for cases

when 7-Zip can not detect whether file is newer or the same.

- Supporting anti-items in 7z format for incremental

update (-u with action #3).

- Some bugs were fixed.

2.30 Beta 7 2001-11-04

-------------------------

- BCJ2: new converter for x86 code.

- Supporting tar archives with very long file names

(GNU extension to 'tar' format).

- Supporting multistream coders in 7z (-mb switch).

- More compressing parameters for zip and gzip

in console version (-m switch).

- Solid compressing option in Windows version.

- Compressing parameters option in Windows version.

- Auto renaming existing files feature for

extracting files.

- Overwrite mode switch for extracting (-ao).

- Some bugs were fixed.

2.30 Beta 6 2001-10-13

-------------------------

- Supporting 7z format in MultiArc plugin for FAR Manager.

- Some bugs were fixed.

2.30 Beta 5 2001-10-02

-------------------------

- Creating SFX archives from explorer.

- 7zWin.sfx: Windows version of SFX module.

- Auto adding .exe extension to SFX archive name.

- 7za.exe now supports 7z, bzip2, gzip, tar, zip.

- Some bugs were fixed.

2.30 Beta 4 2001-09-15

-------------------------

- Self extract capability for 7z format.

- 7z archive format is default for 7z.exe and 7za.exe.

- 7z in default mode now uses bt234 match finder

and solid compression.

- 7z in maximum mode (-mx) now uses 4MB dictionary.

2.30 Beta 3 2001-09-10

-------------------------

- Bug was fixed: decompressing .7z solid archives

containing empty files.

- new 7za.exe: standalone command line version

(only for 7z format).

- Speed of compressing to Deflate format (zip, gzip)

was slightly increased.

2.30 Beta 2 2001-08-30

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- Supporting the new 7z format with high compression ratio.

- -bd (Disable percentage indicator) switch in

console version.

- Bug in console version was fixed:

previous versions incorrectly execute compression

commands with non-recursive wildcards in combination

with subfolders.

- Some other bugs were fixed.

2.30 Beta 1 2001-05-07

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- Speed of reading of archive contents was increased.

- Bug was fixed: incorrect showing file names with

national charsets in some zip archives.

- Now it is possible to compress files larger than 4GB

to GZip archives.

2.24 2001-03-21

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- Bugs in GZip and Cab decoders were fixed.

2.23 2001-03-04

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- Opening archive items in Explorer.

- Context menu for archive items in Explorer.

- Automatic adding extension to archive name in console version.

- Some bugs were fixed.

2.22 2001-01-21

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- Supporting Zip archives containing more than 65535 files.

- Speed of Plugin for Explorer was increased.

- Searching start position of archive now is limited by

first 1MB part of file.

- Some bugs were fixed.

- Packet now doesn't contain 7zip.exe, far7zip.reg and

far7zip2.reg files. There is new far7z.reg file.

2.21 2000-12-21

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- FAR Plugin was improved:

- Showing process box during opening archives.

- Viewing properties of file by Ctrl-A.

- Alt-F6 in archive now immediately extracts selected files

to current directory.

- Some bugs were fixed:

- Entering to archive's subfolders in Explorer by clicking

items in main window didn't work under Windows ME/2000.

- Decompressing solid Rar archives sometimes gave error.

- Console version 7z.exe during list operation incorrectly

showed file names with national (non-english) charsets.

- FAR Plugin didn't execute some operations.

- Showing percents during extracting ZIP archives sometimes

was incorrect.

2.20 2000-11-20

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- Supporting BZip2 and Cab.

- New program architecture with external

compression and cryptographic modules.

- Decryption support (Rar and Zip).

- New console client.