step by step-1.50 to 3.90m33 guide

[psp4lyf]

Originally Posted by PSPDUDE1337

Ah, still the same deal. It feezes after unpacking and "Please wait..." I formatted the card and just put on the 3.90m33 release + 390.pbp. Other ideas? Also, still when trying 3.71 or 3.8 it tells me i need m33 3.52-3 or higher.

what firmware you on??

[PSPDUDE1337]

m33 3.52-4

[psp4lyf]

Originally Posted by PSPDUDE1337

m33 3.52-4

well update update by update then
3.71m33>m33-4 > 3.80m33 > 3.90m33

and remeber when you get the M33 updates put then in the psp forlder UPDATE with then the sony formware E.G 3.90.PBP in the same folder as UPDATE ok.
for support check modifyurpsp :: Index

[PSPDUDE1337]

Hmm. I have 3.52 m33-4 running. I can't downgrade to 3.52 m33-3 ( i dont know how). When I try to do 3.71 m33 it tells me I need 3.52 m33-3 or higher. I go check system info and it confirms I have 3.52 m33-4. I am kinda stuck. No updates will work.

[marceln]

Hello,

I just got a psp today, with firmware 3.72.
Can one of you tell me which custom firmware do I have to use to get to 3.90 m33?

Thanks

[NuMB3Rs]

3.90 is custom firmware.. but in order to get it you need a pandora's battery and magic memory stick. google for those

[marceln]

Yes, thanks... I know about that but I was hoping for an easier solution.
I think I'll just buy some umd's.

Thanks.

[psp4lyf]

Originally Posted by PSPDUDE1337

Hmm. I have 3.52 m33-4 running. I can't downgrade to 3.52 m33-3 ( i dont know how). When I try to do 3.71 m33 it tells me I need 3.52 m33-3 or higher. I go check system info and it confirms I have 3.52 m33-4. I am kinda stuck. No updates will work.

umm thats weird switch your psp off and on it while holding R trigger and go in configuration and change homebrew folder to 1.50 and then try.. but if then it dont work then sorry i dont know

[PSPDUDE1337]

game folder homebrew (currently: 1.50 Kernal) -is this what you meant? If so its on. Ill try switching it ....

[PSPDUDE1337]

you are a genius~ I am now running 3.90m33. ~

[psp4lyf]

glad to hear that mate

[mads1234]

I've successfully downgraded my fat 2.71 to 1.5.

Is there any way to brick it on my way up to 3.90m33 if i follow this guide, or am i basically home free?

[femzy112]

plz can someone tell me hw to upgrade my 3.71 CFW to a 3.80 CFW m33?
Or do i simply change the 371 E BOOT file with a 3.8 one
Thanks

[psp4lyf]

Originally Posted by femzy112

plz can someone tell me hw to upgrade my 3.71 CFW to a 3.80 CFW m33?
Or do i simply change the 371 E BOOT file with a 3.8 one
Thanks

well you first need a pandoras battery then you can have cfw

[Pimmmo]

Hello,

Thanks for the nice guide you put up here

But I'm not so good with the psp and upgrading it.. a friend of mine once put my psp to 3.03 OE-C. But now I want to go to 3.90-2. I've been doing the things you said in your tutorial, but now I'm stuck.. You say I have to put the m33 creator in a map named 'X:PSP/GAME150' (in the beginning when I want to upgrade my psp to 3.52m33), but my psp only has the map: 'H:PSP/GAME' so that's no GAME150, now my question is do I need to make a map called GAME150 or do I need to put the M33creator just in the GAME map? I hope you can help me with this. And I have one other question.. I want to buy a 2GB stick for my psp, but can I just insert it and had reformat it or do I need to do something with it, since I have 3.03 OE-C?

Sorry for some bad English, but I'm from the Netherlands

Thanks in advance.

Kind regards,
Pimmmo