[lommer]

Error number 80020321 :this game could not be started: when you don't have a umd game disc in the drive and trying to run iso/cso.
fix: put any umd disc in the drive (no movie disc).

An internal error has occurred.(80020321) or Format failed.(80220180)
problem: a corrupted memorystick or a fake memorystick most of the time when opening the stick .


Errror ffffffff : when downgrading firmware 2.00 to 1.50 at 99% it says the update failed. contact the sony computer entertainment technical support line for assistant. THIS IS OKAY. DO NOT PANIC. Hold the power switch up for 4 seconds until your PSP fully turns off.
Turn your PSP back on. You will get a corrupt settings error with a blue background.
Just press the "O" button and your PSP will restart with repaired settings.
your PSP should then go through the setup process again.

Error 80410A0B: when you try to scan for networks .. you get "An internal error has occurred. (80410A0B)"
fix:try changing the wlan power save on and off in power save settings...