http://mozy.org/16bit/onestation/

I used to have one of these obscure portable handhelds,
A.K.A NES-On-A-Chip. It was a gift for my birthday given to me waaay long ago... (3 Years ago)

And I stumbled upon this document that people in this scene might take an interest. This kind of explains how to hack and dump ROMs from it's obscure GBA-Like Cart.

I also once obtained the guy's 4MB FlashROM bin file, which contains the dumped ROMs, unfortunately he failed to burn back a game from his PC back to the cartridge. I'd like to try my own luck, but I suck here and there...