I was wanting to downgrade my psp back to 1.50 to allow me to play all the games that I have. I had searched high and low on how to be able to achieve this. I visited forums, searched on blogs and the only answers that I could come up with was that I would need special items to downgrade to 1.50
I had had enough of people telling me that I could not do it so I decided to search some more and was determined to find a solution.
After hours and hours of searching I finally found a guide that said it would downgrade my psp back to 1.50 firmware. It said that it would be able to downgrade from any future firmware version and you can keep this guide to allow you to downgrade in the future.
This guide cost me $25 and it came with a money back guarantee that if it did not manage to downgrade my psp they would refund my money so I wouldn't be out of pocket.
Anyway I bought the guide and started to follow it step by step. Before I finally finished the guide I double checked that I had completed all the steps as I did not want to risk breaking the console.
So the last step was to reboot the system, I rebooted the same and there it was firmware version 1.50 this sweet little guide that cost me $25 now allows me to play all my games again.
In summary if you want to downgrade your psp to firmware version 1.50 then you need this guide.
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You can get the guide to downgrade your psp to 1.50 HERE