While trying to roll back to v1.5 from v2.0.......
Every step was spot on until you have to reboot after the update, and you are expecting the different language screen......where you select english and hit the o key
see here Step 7: Navigate to Game—>Memory Stick, hit the X button, and navigate to the 1.5 updater. Make sure you have your PSP plugged in or
the upgrade won’t work. Click the X button and update like you normally would. At the end of the upgrade you will receive an error saying
that the upgrade failed and to contact Sony. Don’t panic. Ignore this and again force your PSP to power off and reboot.
:shock: :shock: AT THIS STAGE IT WONT REBOOT :shock: :shock:
PRIOR TO THIS STAGE POWER LIGHT COMES ON THEN GOES OFF WILL NOT BOOT
Step 8: After the PSP reboots you will receive an error screen that is scary and confusing because it is in multiple languages. Don’t panic.
Find the language you can understand and read the corresponding line. It notes that your preferences are fragged and that you need only hit
the O button to restore some default-ish settings. Hit the O button.
I NEVER GOT TO THIS STAGE
PLEASE HELP CAN THIS BE REPAIRED
Craig