need help downgrading from 3.90 m33-2 to 1.50

[bacalacadaca]

ok i have everything a pandoras battery and magic memory stick but when i boot it by the way my psp is not bricked it only gives me options to install 3.80m33 or official 3.80 i thought it was suppost to be able to downgrade to 1.50 WTF! am i suppost to do? would i have to purposly brick my psp to downgrade?

[Elven6]

Use recovery mode, its better and easier. Hold R when your are doing a full reboot, then I belive you go to the 2nd or 3rd menu option (something about running a eboot), that should install 1.5.

[bacalacadaca]

will it install it and flash like erase everything and start fresh cause thats why i wanna downgrade ive been doing allot of $#@! to my psp and then i want to upgrade to 3.03 OE-B for themes

[mike_jmg]

3.52M33 is great for themes too
I don't know if recovery will work, cause I tried it once on 3.71M33 and it couldn't erase the files on flash0, since they were as hidden and read only, just ended up with a bunch of extra files on my flash0 (a big mess)

The secure way I know is using pandora's battery with the version that installs 1.50, hope someone knows better cause I guess you don't have one

[bacalacadaca]

yeah the recovery thing doesnt work and i hardmodded my sp battery but and still worked normaly then i made a pandora battery with the pandora battery maker and it stopped working for games but then it did

well all i need to know is how can i make a battery that will downgrade to 1.50

[bacalacadaca]

so nobody knows?

[bacalacadaca]

anybody???!!!!

damn why is it so hard to just direct me to a tutorial or someone who knows

[bish]

the recovery thing won't work as you need a recovery file in there first! you could try the "downgrade 3.71m33 to 1.5 without pandora" google will find it. that will give recovery files. i take it you are using despar cemataro 4 if it tries to load 3.80? edit:- try this http://answers.yahoo.com/question/in...2183902AAqnDzo for the info you need, i've not tested but worth a try