Same here. White bar after firmware upgrade. I can reproduce this as often as I want.
With diffrent SD cards. One is I got together with the GP2X from the shop. Sandisk 512MB.
And guess what !
I used a PSU! NO BATTERIES. The original GP2X PSU from the shop.
This problem has absolutly nothing to do with power or batteries.
Now after pathing I turn on the GP2X, I see the new 3.0 Logo, the Start Sound is played,
Statring Up is showed and the I got Error patch failed. If started with a SD which contains the 3.0 Firware
he starts normal again, then comes patching and slighty after the white bar. I can reproduce this with reflashing 3.0 or 2.0.0 or 2.1.0.
And applying the gp2xfile.img from "HOWTO: Unbrick 'most' bricked GP2X's" doesn't work either.
So, what now ?
Regards.
paines