4.01 m33-2 to 3.71

[TudorBlue]

I have recently upgraded to 4.01 m33-2 but is it possible to roll my custom firmware back to 3.71 without too much trouble????

[Buddy4point0]

You should just be able to run the 3.71 m33 update from the recovery menu.
Just put the update in game/update (or whatever it says in the recovery menu, and run it.

[TudorBlue]

You should just be able to run the 3.71 m33 update from the recovery menu.
Just put the update in game/update (or whatever it says in the recovery menu, and run it.

I have done thi8s but when I go to run the update, I get a message flash up on my psp saying system software is 4.01, no need to update. Anyway of getting around this????

[Buddy4point0]

I have done thi8s but when I go to run the update, I get a message flash up on my psp saying system software is 4.01, no need to update. Anyway of getting around this????

Try going back to 1.5 using this method though the recovery menu, and then updating to 3.71 m33 the normal way.

[mike_jmg]

I think the only way is with a Pandora Battery and an older version of despertar del cementerio

But why do you want to go back?

[TudorBlue]

I think the only way is with a Pandora Battery and an older version of despertar del cementerio

But why do you want to go back?

I just want to know how to do it. I have a pandora battery and a magic memory stick, which I have borrowd off a freind. It had 3.90 and custom firmware 3.90 m33 on it. I have got a spare pro duo stick (1gig) I can use. What I want to do is create a magic memory stick that I can use with the pandora battery to take the psp firmware back to 1.50. Can I do this?? If so, how?? Thanks in adavnce

[mike_jmg]

You can go to 1.50 only if your psp is a phat (PSP-1000), if what you want is to run 1.50 homebrew you can just download the 1.50 kernel addon for 3.90M33

ok to go to 1.50, don't really know why you want to but ok, if you want to go to 1.50 go here and download the file, follow the readme