You need:
- A PSP with 1.0 or 1.50 firmware which you don't want to be updated.
- A game does not require system update to play. (Disc A)
- The game you want to play but requires a system update. (Disc B)
Method:
In the XMB interface, put Disc A into the PSP, then start the game. While in the white screen, swap Disc A with Disc B. Then the game will continue to load.
The timing is just like what we did in Swaploit.
does it work or not ?