Download the attached recovery pack, and extract to the X:\PSP\GAME folder (Whatever X is for your PSP drive)
Copy the 1.50 update EBoot file into the RECOVERY folder, and rename to UPDATE.PBP
Turn the PSP on whilst holding the R trigger to enter the recovery mode. Select the option... Run the program at /PSP/Game/Recovery/Eboot.pbp
Make sure your battery is at 75% or more. Press X to return to the 1.5 firmware.
Once done, run the updates for 3.03OE-A, B & C. You can find these at Pspupdates.com
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