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afterdawn.com > forums > consoles > sony psp - mod and firmware discussion > how do i downgrade 3.90 m33 to 1.50
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How do I Downgrade 3.90 m33 to 1.50
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deepsan5
Newbie
_ 		6. May 2008 @ 14:57 _ Link to this message    Send private message to this user   
Hi, I want to downgrade my psp to 1.50 or and OE versions preferably 1.50. So, can anyone help me out here. I've tried recovery menu but it will always give me an error message. Any help is thankfull. I have a 3.90 m33 psp.
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Dr1ver
Senior Member
_ 		6. May 2008 @ 15:10 _ Link to this message    Send private message to this user   
pandoras battery and a mms use upms its so simple to use. select the hellcat one that can get you to 1.50

if your on a slim (which i bet you arnt) then you cant downgrade to anthing bellow 3.60m33
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DERP DERP
deepsan5
Newbie
_ 		6. May 2008 @ 20:34 _ Link to this message    Send private message to this user   
I installed the hellcat version but its just installing 3.52 m33. What do I do to go to 1.50
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deepsan5
Newbie
_ 		7. May 2008 @ 01:19 _ Link to this message    Send private message to this user   
Thanks man I tried the other ones and one of them downgraded it and sorry abt the above post.
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dsales04
Suspended due to non-functional email address
_ 		16. May 2008 @ 08:46 _ Link to this message    Send private message to this user   
Originally posted by Dr1ver:
 pandoras battery and a mms use upms its so simple to use. select the hellcat one that can get you to 1.50

if your on a slim (which i bet you arnt) then you cant downgrade to anthing bellow 3.60m33
thats not completely true. i have a psp slim with 3.90m33 firmware and i can switch from 1.50, 3.60 m33, and 3.90 m33 with a program called time machine. if you dont believe me look on youtube. thats how i found the program
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Dr1ver
Senior Member
_ 		16. May 2008 @ 08:55 _ Link to this message    Send private message to this user   
yer its not realy installing/flashing it

it works in the same way as the ubunta cd for pc you can just boot it of the cd

basicly your booting 1.50 (with parts of 3.40) off the memory card

personaly i cant see a point to it unless you use homebrew alot but if you dont id wait untill something solid like 1.50 flahing to the psp slim.

the only reason i didnt metion it is that i didnt want to confuse any one iv never used it and i thought you had a fat psp

enjoy though
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DERP DERP
Mchief298
Junior Member
_ 		16. May 2008 @ 10:27 _ Link to this message    Send private message to this user   
wait, so can you run Homebrew off the M33 line? Or do you HAVE to have 1.5? and why did you want to downgrade?
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Dr1ver
Senior Member
_ 		16. May 2008 @ 12:03 _ Link to this message    Send private message to this user   
basicly hombrew can be writen to boot of any cfw kernel be it 3.90 or 1.50 as an example

more homebrew work on the 1.50 kernel as its easy to code for

the advantage of dpwngrading is that you can get to other cfw
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DERP DERP
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