You can find pre-compiled binaries ready for installation here.
Download SGTPuzzles.app.zip from one of the above links. Unzip the file. Connect your PocketBook to your PC with an USB cable. Copy SGTPuzzles.app to the folder /applications on your device. Unmount the USB connection, and reboot the PocketBook. You should now see an entry @SGTPuzzles among your apps.
The nightly pre-release will be kept in sync with the current master branch. Install this if you want the newest features; keep in mind that this build might be unstable and less thoroughly tested.
Important notes on upgrading the app
In the nightly release and upcoming stable releases (0.7.12 and higher) the loopy puzzle will not contain all grid types anymore. The app may crash when trying to launch a loopy game configured to one of the unsupported grid types.
To prevent a crash, configure the loopy game to a squares grid type before upgrading.
Version 0.8.2 was compiled with the current SDK 6.8 to support dark mode. This included a check that the device is running with firmware 6.
As this prevented older devices that are still running firmware 5 from running the app, I made the app backwards-compatible with firmware 5. So if you have a device with firmware 5, please install any version other than 0.8.2.
Lots of hacking and reverse-engineering, as documentation for PocketBook app development is very, very sparse.
Build and installation is completely on your own risk! You must be aware that this software could brick your device.