How to Downgrade 5.51 to 1.50 for PSP Fat

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Wednesday 30.7.2025 / 02:51

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How to Downgrade 5.51 to 1.50 for PSP Fat

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VinnyPooh

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22. November 2009 @ 16:35

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I'm a total noob when it comes to psp firmware and modding but recentley i became interested in firmware becuase i read about a mod that alows the psp to utilize all 32 ram for the PSP web browser which could enable me to play big flash games without the psp telling me that there is no memory left and i cant play. The only problem is that since i never used firmware, my psp 1001 is now version 5.51 and i cant use the mods beacuase the psp wont let me. I know i have to make a pandora battery and a magic memory stick to make the downgrade process complete. I have concerns about the battery. Will there be any leakage? My psp is not bricked so what do i do after i make the pandora battery?

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VinnyPooh

Member

22. November 2009 @ 18:06

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Forget it, i already made the pandora battery, but my only problem is that i dont have a second psp with cfw on it. Is there a way to downgrade my psp to 1.50 with the pandora battery i made and my official sony FM 5.51 without a second psp with cfw on it?

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3MUK

Member

1 product review

23. November 2009 @ 14:21

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nope in order to downgrade u need a cfw on the psp and a pandora or hellcats downgrader-upgrader.

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Eisherz

AfterDawn Addict

23. November 2009 @ 14:56

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Originally posted by 3MUK:
nope in order to downgrade u need a cfw on the psp and a pandora or hellcats downgrader-upgrader.

Please stfu if you have no ideas what you are talking about.
To the topicstarter:
You already got the pandora battery, so all you need now is a magic memory stick, just google magic memory stick creator, then you shouldn't have any problems with downgrading.

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Xbox 360: Slim untouched with a faked 320 GB harddrive for XBL, phat with LT 3.0, played Halo early, so going on live would be an instand ban, also with a faked 320 GB harddrive
PS3: Untouched 160 GB Slim, 60 GB Fat with latest Rogero and 160 GB internal harddrive.
PSVita: hardly ever play it
GameCube: Black with a Viper chip installed. With gameboy player. Trying to get a Wavebird controller.

This message has been edited since posting. Last time this message was edited on 23. November 2009 @ 14:58

VinnyPooh

Member

23. November 2009 @ 15:47

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Yeah i got it working yesterday. I then upgraded to 5.03 so that i could enable ChickHEN mod highmemmod; works like a charm. I did not need another psp with CFW becuase i got everything working with only my psp, my pandora battery, and my magic memory stick. Everything worked great :D

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