Downgrade 4.01 m33 to 1.50 OFW SLIM

[alexdf990]

a while ago i hacked a slim psp to 4.01 and the time has now come to rev\ert it back to 1.50 (well basically any OFW) i ha\ve lost some of my knowledge on hacking psps, and was wondering whether it would be a matter of getting the ofw renaming it and running it on the psp? a guide step to step guide would be great, thanks

[watsindname?]

you cant put 1.5 on slim.
Use network update without m33 netword update.Easy as hell.

Start your psp in recovery menu[R trigger on start up]
Configuration>>Use m33 network update>>disable it
Exit recovery

Go to network update
and follow onscreen instructions.

[alexdf990]

oh yeah forgot that you can't get 1.5 lol soz.
ok thanks will try that asap

[watsindname?]

good luck!!!
you can also use pandora battery but this is more adventurous!! as well as safe!!

[Geek]

hellcat's recovery flasher will let you downgrade and upgrade search around