Heres a new release of the 8 bit Sega Systems emulator for Android:

Sega Master System/Game Gear emulator for Android has been updated. Changes:
- Released free MasterGear 4.1 for Windows and Linux.
- Fixed issue with backup save file being chosen over the normal one.
- Switched to DropBox APIv2. DropBox support works again.
- Use "Settings | General | Reset All Settings" to remove old DropBox token.
- Fixed upload dates on the DropBox files.
- Made DropBox worker queue more reliable.
- Renamed DropBox authorization activity.
- Fixed a few other bugs in the DropBox code.
News source: https://play.google.com

via http://emu-russia.net/en/