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December 28, 2012 // 3:43 am - Nearly two months after the previous update, today I have posted a guide and video on how to downgrade a PS3 4.31 OFW console (including CECH-300x slims) to 4.30 Rogero v2.03 CFW using a PS3 Hardware Flasher with no 3.55 needed.

Very easy tutorial. Follow the steps to downgrade a PS3, but when you get to the first step of the USB downgrading part after putting your PS3 into service mode, use Rogero 4.30 CFW v2.03 on the root of the USB with the lv2diag.self to downgrade instead of the 3.55.

So again, no 3.55 ever touches the PS3 during this whole setup! Doing this will also now allow CECH-300x models original slims to be downgraded to 4.30 CFW as long as it never touches 3.55

The whole reason for this was to find out if the E3 fits a CECH-400xx model super slim models, but all I needed was proof that you can downgrade from 4.31 to 4.30 CFW with a flasher.

So if any one out there has an E3 and a new super slim model please test this if it works! You can make back ups of the NOR incase it fails.

Here is proof you can but I still do not know if the CECH-400xx models are compatible since I do not have one.

Files needed for safety and to proceed:

PS3 USB links after NOR editing:

E3 back-up checks links:


  • Step 1 - switch pup's with Rogero's 4.30 CFW v2.03 - my link has it set ready
  • Step 2 - lv2diag out of factory mode
  • PS3 nor dump patcher to fix bad back-ups
  • downgrade.bin - makes it rewrite the nor to allow factory mode access
  • update.bin - its the Samsung version of the flasher firmware, allows multi-console downgrades.. more than one console in other words
  • PS3 Flowrebuilder - decrypts the backups to look and make sure its good

Here is proof of me downgrading to 4.30 CFW no 3.55! My video is not cut but speeds up through the middle since it takes almost 2 hours to prove this. You see every time I drop the camera, fix the E3 and finish the downgrade straight to 4.30 CFW Rogero v2.03 which you will know it's spoofed to 4.31, you can see the install PKG / lastGAME icon after downgrading.

Hint: The E3 always has the ribbon starting under the NOR words (pictured below).

Always test your back ups and even use Flowrebuilder 4.2.2 to reverse decrypt to make sure your back up was good.

Video: PS3 4.31 OFW to 4.30 Rogero v2.03 CFW with Flasher Guide

Video: PS3 4.31 OFW to 4.30 Rogero v2.03 CFW with Flasher Guide

Video: PS3 4.31 OFW to 4.30 Rogero v2.03 CFW with Flasher Guide

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#84 - miki2o - December 28, 2012 // 5:34 am
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What is the procedure? I can't understand how to do this...

#83 - alchybear - December 28, 2012 // 5:30 am
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well then you need to try this as it does work from another user has already tested it and left a comment saying it works for 3000x models. if your talking about 4000x model super slim i doubt a boot loader will change if you can still read or write to its own nor when its the exact same brand as any other slim that the e3 fits on.

and if your saying it doesn't work trying to go to 3.55, in this case here this does not go to 3.55 at all, its on a firmware that 3000x models have been on and are able to downgrade to.

#82 - technodon - December 28, 2012 // 5:12 am
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no way will this work on the newer consoles, sony changed the bootloader keys. i tried flashing custom firmwares into a 3000x series console before. it doesnt work!

#81 - PS4 News - December 28, 2012 // 5:03 am
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Got ya... So the mirrors you made are for the same files as the large pack just split up eh? I was thinking that, but the filesizes didn't seem right although maybe different compression etc.

Two sites I use (both are under uploading maintenance at the moment, but should be back soon) for 200+MB files are and (example files from each of files over 200 MB: and

Anyway, thanks for the clarification alchybear and +Rep!

#80 - alchybear - December 28, 2012 // 4:40 am
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i tried to re-upload the single one but none of the sites i tried would go over 200mb so i had to split the files into 2.

#79 - PS4 News - December 28, 2012 // 3:46 am
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I have now promoted the article to the main page and +Rep to alchybear for sharing!

I was able to grab the latter two (194.60 MB and 5.56 MB) required files, however, if someone can mirror the 4.31 to 4.30 e3flasher.7z (235.40 MB) one I will update the article with it as I didn't get it before the link showed "File owner's public traffic exhausted. (da3c7b74)" unfortunately.

#78 - akimazaki - December 28, 2012 // 3:19 am
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All cech300x will work.. i just get my work fine.. make sure have good backup

#77 - astar0th - December 27, 2012 // 10:22 pm
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does this solution works on CECH-3004B datecode 2A ?

#76 - ROOKI3 - December 27, 2012 // 7:31 pm
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You have to open console to downgrade.

#75 - bruceteh95 - December 27, 2012 // 7:16 pm
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do tis work for cech-200x ofw 4.31 , no nid open console to downgrade~