Downgrade help

**FormickaW** · 11-03-2012,09:55 AM

I have CFW 4.21 and I need to downgrade before updating to rogero cex 4.30.
I downloaded the file 4.25 to 3.55 for downgrade and when i try to install it, I always get this error: the data is corrupted(8002f...)
When I install from recovery mode some problem.

Pls help thx

**nullptr** · 11-03-2012,10:22 AM

The downgrade CFW should be installed from XMB. Try using different flash drive and don't forget to make sure that MD5 matches. I solved it this way

**FormickaW** · 11-03-2012,03:58 PM

Originally Posted by nullptr

The downgrade CFW should be installed from XMB. Try using different flash drive and don't forget to make sure that MD5 matches. I solved it this way

49d80e07fc1f5ca1b0840e02e94635db I used this code, tried using different flash but nothing happend same problem.

**nullptr** · 11-05-2012,09:01 AM

Dude, I'm not an expert in this stuff. I just gave you general advice because I successfully downgraded twice using the XMB way but never the Recovery one.

It seems that you shouldn't have gone to recovery while on 4.30. I also heard that formatting HDD while on 4.30 could cause the same error.

I'm sorry but you might have a semi-brick.

I hope someone can share a solution.

Good luck

Edit:
The Rebug downgrade PUP might work in your case, but be careful, I'm not responsible for anything that might happen. Try on your own risk!

**FormickaW** · 11-06-2012,05:50 AM

Originally Posted by nullptr

Dude, I'm not an expert in this stuff. I just gave you general advice because I successfully downgraded twice using the XMB way but never the Recovery one.

It seems that you shouldn't have gone to recovery while on 4.30. I also heard that formatting HDD while on 4.30 could cause the same error.

I'm sorry but you might have a semi-brick.

I hope someone can share a solution.

Good luck

Edit:
The Rebug downgrade PUP might work in your case, but be careful, I'm not responsible for anything that might happen. Try on your own risk!

where i can find rebug downgrade ???

**nullptr** · 11-06-2012,07:11 AM

See this link, it's at the very bottom named "REBUG 3.55.3 '999' DOWNGRADER".

REBUG 3.55.3 and 4.21.1 REX EDITIONS and ’999′ DOWNGRADER | Codename: REBUG

You will need to dehash after downgrading. You can find a dehashing tutorial in the forum.

**FormickaW** · 11-10-2012,07:52 PM

OK I download "REBUG 3.55.3 '999' DOWNGRADER" and i succesfully install. Now I'm on System Software Version 3.55. What next thx a lot

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