The PSP Developer/hacker Neur0n released his 6.60 CFW it's in beta state so install it at your own risk!
Only on hackable models 100X and 200X!
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Only on hackable models 100X and 200X!
Code:
The first CFW 6.60 beta released by neur0ner!
You have the EBOOT.PBP of FW6.60, rename it to 660.PBP.
After renaming it, create folder named UPDATE and copy or move it to your psp\game.
Run it from XMB.
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