Yea 3GP works, but I don't use that because it's pretty crappy quality compared to Divx I have a lot of space so I prefer Divx above 3GP
The Firmware Date(Major version ID it's called I think it means Firmware version) is "Aug 29 2008" according to the player, pretty decent
And Knob, I would love to give you my firmware for you to try but I just can't dump the firmware
well as soon I can I'll upload it
EDIT:
Something weird just happened, I shutdown player with PlayPause button and immediately switched it off with that switch which removes the power
When turned back on the player was reset to Chinese tough because of the simple User interface it was easy to find settings(By the image) and then there where only a few options to choose from so the language setup option was easily found
I just have to remember to use the power off switch after the screen is totally black or the player is still on or just not use it
Not a big problem but just tought to let you know