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afterdawn.com > forums > consoles > sony psp - mod and firmware discussion > psp [firmware 4.05] corrupt data & downgrade firmware
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PSP [Firmware 4.05] Corrupt Data & Downgrade Firmware
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nYc_Singh
Newbie
_ 		29. August 2008 @ 14:06 _ Link to this message    Send private message to this user   
I bought a used PSP with firmware 4.05 ["phat" version]

i tried putting demo games on there. when i get to the memory stick in games.. it shows the corrupt data. i tried deleting it.. from windows and the PSP.. but when i put a new copy of it.. that doesnt make a difference.


is there anyway to downgrade the firmware to any that would be able to play ISOs? a guide would be nice.



thanks for the help
[ + quote]

This message has been edited since posting. Last time this message was edited on 29. August 2008 @ 14:08
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mrgooey
AfterDawn Addict

4 product reviews
_ 		29. August 2008 @ 16:42 _ Link to this message    Send private message to this user   
To downgrade (and get a custom firmware) or unbrick your PSP, you need the Pandora's Battery. There is three ways to get the Pandora Battery.

1. Find a someone who has a Custom Firmware that is willing to let you borrow their psp. You will use their psp to softmod the battery. Meaning using software to make the Pandora. If you willing to do this, follow this guide:
GUIDE

2. Hardmod the battery. Meaning that you have to open that battery up, and pulling out a pin. Note that if you pull the wrong one, your battery would be messed. If you are willing to do this, follow this guide
GUIDE

3. The most safest way, is to buy a premade pandora battery from the internet (use google or ebay).If so, follow this guide or use the same guide on the second step. I recommend buying from DealExtreme for $10.
GUIDE
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nYc_Singh
Newbie
_ 		30. August 2008 @ 11:19 _ Link to this message    Send private message to this user   
hm... alright.. guess i might have to do that.

any advice about the corrupt data?




.
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Donaldo
Senior Member
_ 		30. August 2008 @ 11:25 _ Link to this message    Send private message to this user   
what size memory stick is it and where did you buy it from ?
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nYc_Singh
Newbie
_ 		30. August 2008 @ 16:20 _ Link to this message    Send private message to this user   
256mb

and it came with the purchase.
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Donaldo
Senior Member
_ 		30. August 2008 @ 16:37 _ Link to this message    Send private message to this user   
you've tried reformatting the card through your PSP ?
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nYc_Singh
Newbie
_ 		30. August 2008 @ 16:38 _ Link to this message    Send private message to this user   
Originally posted by Donaldo:
 you've tried reformatting the card through your PSP ?
yup... that still didnt work
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Donaldo
Senior Member
_ 		30. August 2008 @ 16:41 _ Link to this message    Send private message to this user   
sounds like the card is no good...

just buy another one i got a 512mb one for 9 dollars & free shipping... so 256mb card is not really worth too much.
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nYc_Singh
Newbie
_ 		31. August 2008 @ 20:27 _ Link to this message    Send private message to this user   
it is the card. i formatted it for the x'th number of time... and it worked.



.
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