Okay, I have a serious problem with my JAP PSP!
Here's the story:
I have bought my PSP with FW 1.0 in March this year and upgraded to 1.5 and later to 2.0 but then homebrew fascinated me and i MPH'ed back to 1.5. But now I have bought GTA (US-version) and had to upgrade to 2.0. I've played GTA for a few hours and then suddenly my car was always turning left and my analog-stick was dead! I wanted to set my PSP in StandBy but the power-switch was dead too so I had to remove the battery. I put it back in and started GTA again, but the analog stick was still dead!
At first I thought my savegame was corrupt, but the same thing happend on every savegame and on a new started game. I tried to press the home-button to get back to the menu and the "please wait..."-screen appeared about 5 minutes until it went back to menu.
Then I opened the webbrowser to test the analog stick. I've turned 2 circles with my analog-stick and then it moved slowely into the left top corner of the screen and didn't move anymore, power-switch was dead again, too.
If I take out the battery about 5 minutes or more, i can play GTA for around 15 minutes until this sh*t happens again.
I've tried to re-down and upgrade but nothing changed, same problem...
What could that be???