V.Flash Hacking
Unlike most other CD-ROM-based consoles, the system uses 12 cm CDs enclosed with plastic to protect damage from touching, which is somewhat similar to 3.5" floppy disks or UMDs. The discs use the ISO 9660 file system, without any copy protection mechanism other than a simple sensor in the case jacket, making it possible to make a disc image out of the media, although there hasn't been any known cases of piracy involving the V.Flash. The CD drive supports CAV and is able to read CD-R/CD-RW up to 4x speed. It can play Audio CDs and also has a headphone plug. Each game seems to have a real-time kernel operating system on it. The OS in question is apparently µMORE v4.0 ARM9T yet i can't find any mention of a ARM9T version... It seems like there is no easy way to run executables on this thing.
You can easily see the game's files by simply popping it into your cd drive; it uses a standard ISO layout. The files also do not need to be set at a certain LBA address, as if you delete and put it back, the console will still play them. The only problem is the unsual binary format, which is, according to MultiMedia Mike, a chunked FourCC format.
Inside the unit, the console detects if the inserted disc is a game, or a cd-rw, and I'm unsure if it's a plastic mechanical switch, or a button, but taping it down will let you play burned games. The system will easily boot a game from the music CD tray if you tape down the button on the front right inside the systems CD tray. You can open and make backups of your V-Flash games by putting force on the caddy and sticking it in a cd drive.
-The information above came from YouTube user teh_supar_hackr 0010101