DOWNGRADE 2.5 TO 1.5

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DOWNGRADE 2.5 TO 1.5

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joszam

Newbie

5. January 2006 @ 17:19

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Step 1 - Required is 2.5 firmware...anything lower/higher...don't know, haven't tried.

Step 2 - Go into USB mode, wiggle the USB cable loose a bit and wiggle the cable in and out until it says 'Connect a USB Cable', although it's connected and on your computer the PSP Drive is present. Kind of a trick to the firmware, I don't know much about it...

Step 3 - Go into and load the 2.6 Update, however, since the PSP is connected to the PC still, simply load the upgrade into the first EULA screen, then proceed, make sure no AC cable is connected...when it prompts you to connect the AC Cable, first swap out (remember the PSP is connected to the PC via USB mode, you 'tricked it') the 2.6 eboot with the 1.5. Seems dumb and impossible, but it works and continues the update, downgrading to 1.5...however, I upgraded back to 2.5...tried it again, and bricked the PSP.

The key is to swap out the eboot when you're prompted to plug in the AC adapter as opposed to during the EULA, since the PSP will execute the file after the EULA, whereas, if you swap AFTER the EULA, it'll execute without processing...or something. I don't know much information, other than, if you can get the USB part down and pretty much follow step for step, it worked for me (once).

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PUGARIES

Newbie

5. January 2006 @ 20:48

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is there any easier way to do it?cuz with wiggling the usb it wont connect my psp to pc altho the psp screen says "usb mode"

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This message has been edited since posting. Last time this message was edited on 5. January 2006 @ 20:58

RavenLife

Senior Member

6. January 2006 @ 00:48

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this is bull5h!t

couldn't possibly work

plus ppl who know what they are on about (like me for instance) will tell you that the psp checks about 3 - 5 times whilst updateing to make sure it has all the right files.

sony put that in not to screw us - but so that we wouldnt brick our psp

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http://richiemortimer.com - Fiction & Poetry

joszam

Newbie

6. January 2006 @ 01:51

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well...i havent actually tried it but i found it on sum other website and thought u should c it... sum1 on the website said they did it with lots of psp's, so it might work

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RavenLife

Senior Member

6. January 2006 @ 04:26

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thanks for passing on the info but it wont work

try it and post your results

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http://richiemortimer.com - Fiction & Poetry

sobhy2406

Senior Member

6. January 2006 @ 04:52

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