downgrading from 4.01 m33-2 to 3.8 m33

[mohamedzaki]

i have a moded PSP slim with CFW 4.01 m33-2. is it possibl to load an earlier CFW version like 3.8 m33 ?. th reason i want todo that is because i want toinstall IR shell and it just supports m33 CFW uptill 3.8. another question is what do i need to add to be able to run 1.5 kernel homebrew. guids say that i need to install 1.5 kernel plugin but ONLY for phat and not slim. so how cani do it on slim ?

[davewill]

To go to 3.80m33 you need 4.01m33 recovery
PSP News - Recovery Flasher v1.30
Then update from 3.71m33 to 3.80m33.
for 1.5 add-on run time machine
http://www.pspmod.com/forums/psp-fir...e-machine.html (Guide - Easy Method of Time Machine!)

[Bewood]

IRShell is supported on 3.90m33-3 with the patch.

I know, I did it.