Downgrading - Upgrading - Unbricking

[jing12]

oi. why no 3.90 m33 tutorial?

[Kernel Kev]

Lol, because i have a life outside the forum aswell.

I got a week off college so it will be going up soon.



Kev

[jing12]

LoL ^^
doesn't matter :-P

[Zaderian]

so is it suppose to take forever to write the 3.52 update files?

[jing12]

ok. since Kev busy with his college life
i help him make tis guild ^^
click the link
3.90 m33.installation guild
http://www.psp-forum.com/psp-homebre...g-3-90m33.html

[Kasya]

Hello
I wanna Downgrade my PSP 3.90 to M-33 Custom Firmware(Any Version)

Can i change the firmware to 3.90 M-33 or If i downgrade it Can it Brick My PSP?

[Monkey Business]

There is always that risk of bricking your PSP when downgrading however if you follow all the instructions properly then the chance will be very slim. Because you have firmware 3.90 the only way for you to get on custom firmware is by using pandora battery, see first page on how to make one.

[psp20ace]

Hi all,

Have a PSP Lite and have version 3.71 and want to downgrade so i can run
M-33 3.80 Custom Firmware.
Cant seem to find anything for PSP's with v3.71 to downgrade.

Please help!!

Cheers

[Monkey Business]

The only way for you to downgrade is by using pandora battery. Look on the first page to see how to make one.

[psp20ace]

Hi,

All done!! PSP Lite v3.90 M33

Already had a pandora battery done from a friend (FAT PSP BATTERY)
Did'nt need to downgrade from Sony v3.71 to M33 V1.5.
Had software that reconised the version i had and updated with M33 v3.71 and then just again updated to latest M33 v3.90 after that.
I must say that when you finally do it it's amzing when you look back on how EASY it really is!
Many thanks to all on this forum for all of your posts!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Cheers