ODROID-GO

Official wiki: wiki.odroid.com/odroid_go

Press the Menu button to return to the menu before turning off the ODROID-GO. When you turn the device back on, pressing "B" should take you back to game at the point you left off.

In game saves do work, but the workflow is more than what you would expect. Play the game like normal, and save the game like normal. Once you do that, hit the hamburger button to save the game state and exit the emulator to the main screen. What has happened here is that the emulator has created a save state for the ROM, but has also saved the SRAM content (where the in-game save resides).

Once you start the game back up, either with the save state and browsing to your saves in the game, or by restarting the ROM from scratch by holding the start button down while powering up (after the ROM has been exited) you should see your in-game save is there.