The new custom firmware is available for download. Don't forget to download the emulators package or you can't use the Atari Lynx emulator from d_smagin. The guy is a real genius and I'm very happy that he took the time to make a first version of his handy_sdl emulator so we can use it with the new custom firmware.Atari Lynx emulator:
The Atari Lynx emulator already works very good on the Dingoo A-380 in both fullscreen and simple2x mode. To toggle between the screen modes use the L button. Button layout is A = A, B = B, X = Option 1 and Y = Option 2. With the Start button you can pause the game. To quit the game use the Select button.
A final version with a gui and more tweaked is going to be available some time in the future. For now we have to do with this one that he build so I could release the new custom firmware.
Enjoy the Atari Lynx emulator.SDLWrapper:
Also new in this custom firmware release is the SDLWrapper build by an other genius Ayla. You can use it to center the image from SDL games on the Dingoo A-380 screen. To give you an example. Dowload the game Digger. Copy it to the "sdlgames" folder on the external MicroSD card. Start it from "SDL Games" in the firmware and enjoy it at 320 x 240 pixels with the image centered on the screen.
You can download the game Digger here: http://dl.openhandhelds.org/cgi-bin/dingoo.cgi?0,0,0,0,35,433
Thanks to both Ayla and d_smagin for their time and support.