PSP 3000

Hi guys......

I have a PSP 3000 which I'm wanting to downgrade to the 1.50 software to play ISO's
the software version that is currently on the PSP is version 6.20....

So what I'm wanting to know is that can the PSP 3000 be downgraded from version 6.20
to version 1.50,if this is possible is there any tutorial in the forums..........

Many thanks

Nope, the 3000 can't go to 1.50, the lowest CFW u could be on was 5.03 gen-a ....