PSP Go

I downgrade my psp from 2.6 to 1.25?
I downgrade my psp from 2.6 to 1.5 so you can play homebrew or something to help me find a downgrade to 2.6 please help me
Can not happen. Once 2.6 is loaded, you can not go to 1.5 …. Sad
Downgrader 2.5 2.6 to 1.5

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