Here is a useful FAQ on the GA330 from willgoo.com : http://www.willgoo.com/faq-on-gemeia330-ezp-18.html
FAQ on GemeiA330
Q. What is gemei a330?
A. Dingoo A320 — is a portable multimedia device, combining functionality of audio player, video player, FM radio and game console emulator.Produced by Shenzhen Dingoo Digital Co., Ltd. From march 2009. It is the main competitor of GamePark Holdings.
Q. What about Dingux?
Q. How to upgrade firmware?
1. If you have “gemei fashion, proceed to next question
2. Turn on console, connect to USB, place firmware file to the root of console.
3. Do not turn off console, dismount it or “safely remove” from usb. Media library update should start
4. After media update, turn console off, then on. Update should start.
Q. How to update Gemei A330 without wireless unit?
Q. What is the most recent firmware?
Q. Where I can get files from stock firmware?
Q. Firmware flash was unsuccessfull. How to unrick the device?
Q. Console hangs during media library update How to fix it.?
Q. Are there more recent emulators, than in stock firmware?
Q. How to enter emulator menu?
Q. Where to put ROMS?
33D — games and apps for Native OS. Format *.CC in firmware 1.0; *.с2s — for 2D games in firmware 1.1 and *.с3s for 3D games. You shiuld search in game center folder → Single Games.
CPS1 — games from CP System I (http://en.wikipedia.org/wiki/CP_System). Format *.zip. Romsets from MAME should also work. Located at game center → Internet Games.
CPS2 — games from CP System II (http://en.wikipedia.org/wiki/CP_System_II). Format *.cp2. www.dingoo-digital.com/downloads/applications/cps2-converter-english-version — converter. Located at game center →Internet Games.
GBA — games for GameBoy Advance (http://ru.wikipedia.org/wiki/Game_Boy_Advance). Format *.gba. Located at game center → Single Games.
MD — Roms from Sega Mega Drive (http://ru.wikipedia.org/wiki/Sega_Mega_Drive). Format *.smd. Converted from *.gen or *.bin. Converter — www.codeisle.com/products/sega-rom-conversion-utility/. Located at game center →Internet Games.
MVS — Games from Neo-Geo (http://ru.wikipedia.org/wiki/Neo_Geo). Format *.mvs. Located at game center → Internet Games.
7. NES — games from Nintendo Famicom and Nintendo Entertainment System (http://ru.wikipedia.org/wiki/NES). Format *.nes. Located at game center → Internet Games.
8. SNES — Super NES (http://ru.wikipedia.org/wiki/Snes). Format — *.smc. Located at game center → Internet Games.
Q. How multiplayer works?
Q. What is NEOGEO.ZIP in folder GAME?
Q. Is conversion mandatory? Where I can get pre-converted roms ?
(http://sentinelgames.com/documents/cps1.html), CPS2 (http://sentinelgames.com/documents/cps2.html), Neo-Geo (http://sentinelgames.com/documents/neo_geo.html).
Q. What are the best games?
Q. Cannot see games, uploaded to flash card
Q. What is Trainer in NES Emul?
Q. What is Read strategy in GBA->Misc?
В. How to change language
Q. Console does not enter sleep mode.
Q. When I enter game center I see a lot of folders instead of games. How to fix it?
Q. Is there any hotkeys?
· Select+Start — emulator menu.
· L+Start in game - enable TV-out.
· ↑/↓+Start — Change volume.
· ←+Start — Fast save state
· →+Start — Fast load state.
· Long Start press — turn console on/off.
Q. What video formats are supported and should vide be converted?
Q. Video and sound are not synced. Can it be fixed?
Q. How to use tv out?
You can use standart mini-jack 3,5mm cable
Or you can build your own like here.
Q. Can I change skin of Native OS?
You also can unpack firmware and redraw graphics. Use this tool www.multiupload.com/5B095SKCDK. Drag file to unpack.exe to unpack,and run wadpack.bat to pack. Do not change pixel size of gfx. It will work, but console cannot resize files.
Q. How to unmount Windows 7?
Q. Console not connected in Linux.
Q. I connected console to Windows 7 and file system is corrupt
Q. What is better ? Dingoo A320 or Gemei A330
Q. Is it possible to write your own software??