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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:


Steps:

  • 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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#104 - technodon - December 28, 2012 // 10:59 am
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it won't work anyway cause the 4.30 custom firmware has been resigned using old bootloader console keys, 3000x series has new keys but to bypass the flasher problem extract the coreOS from the 4.30 custom firmware and you need to byte reverse it and paste it into your nor backup at offsets 0C0010 & 7C0010 using a hex editor

#103 - alchybear - December 28, 2012 // 10:12 am
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the firmware i'm trying to downgrade it to is 4.30 cfw. so what is left for me to do to make it pass the metldr 2 error when trying to perform 000001 rewrite of the nor with the e3?

#102 - technodon - December 28, 2012 // 9:49 am
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they are downgradable but only to minimum firmware which would be 3.60 or 3.66 most likely

#101 - alchybear - December 28, 2012 // 9:38 am
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here is the link to my back up for a CECH-3001a if any one is able to figure out how to modify the metldr 2 and fix this to be down-gradable. i have my e3 ready to test this when i have the time.

http://www.mediafire.com/?dp8jubqw9vu188i

#100 - technodon - December 28, 2012 // 9:37 am
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its because newer consoles have a minimum firmware version of 3.60 or higher and will never support 3.55 or below sony blacklisted the private key that geohot found in newer firmwares and new consoles also have new boot loader keys so you cant flash a custom coreOS onto a 3000x or higher cause they have been signed with the old bootloader keys.

if by some miracle the new private keys can be calculated then all the new consoles would be jailbroken again but this is highly unlikely now that sony use a true random number to generate them

#99 - alchybear - December 28, 2012 // 9:04 am
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after you finish the downgrade and out of factory mode you are safe to remove the flasher, the best update.bin i know of its the samsung one that allows you to do this on more than one console. that is the update i have available in the links.

did more research do not get a new or near new slim as it will not be compatible with downgrading in general at this time. nothing its set to edit a metldr 2 and the metldr B1 version. newest versions of 2500x older ones can, + 3000x + 4000x are not downgrade able since their metldr's are not fixed yet to be down-gradable.

i'm guessing all slims and new slims can have a backup created and a write with the original back up but it can not be modified due to metldr 2 which has not been cracked to allow downgrade.

#98 - babyjoe00069 - December 28, 2012 // 8:44 am
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Ok, do you leave the flasher in the ps3 and the ps3 hdd in that enclosure or when all is done you remove the flasher and put ps3 hdd back in, are you able to reuse the flasher on other ps3s? I personally have 4 ps3's

#97 - technodon - December 28, 2012 // 7:56 am
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open your nor backup in a hex editor and paste the ros and revoke patches below from the wiki. then put all switches down on the flasher and press start.

ROS0 http://www.multiupload.com/RJVZP6CKZ5 patch1 (7 MB) 0x0C0010 0x6FFFE0 version string 3.55
ROS1 http://www.multiupload.com/DGVUPMNDQU patch2 (7 MB) 0x7C0010 0x6FFFE0 same as patch1?

trvk_prg0 (0x40000)
trvk_prg1 (0x60000)
trvk_pkg0 (0x80000)
trvk_pkg1 (0xA0000)
rvk-040000 http://www.multiupload.com/MU7JRLE8R1 (512 KB) 0x40000 0x80000 one big patch overlapping several revoke area's

the patch looks like this:

patch1-0C0010-7C0010.REV;0C0010;6FFFE0
patch1-0C0010-7C0010.REV;7C0010;6FFFE0
rvk-040000.REV;040000;080000

#96 - alchybear - December 28, 2012 // 7:46 am
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alright it is confirmed that 3000x models are not able to be successfully downgraded to 4.30cfw. anything older is able to with this method, but i have found a way to modify the back up and still be able to install it instead of letting it do all the work. just does any one know how to modify a back up to allow downgrading with out the unlock mod of the e3 doing it for you?

you will need to solder tristate point its the same as the 2501 models since i just bricked my 30001 for fun and fixed it. if any one wants a copy of the original backup that is safe on my 3001 let me know.

Quote Originally Posted by technodon View Post
did you brick your console? lol.

yes i did cause i tried a rogero auto patch fixer on the back up for fun that is set to downgrade but its fixed now and you are correct about 3000 models but this still allows downgrade to 4.30cfw for older slims. i only knew that firmware was 3000 models. and i thought there was a way to have 3001 models on 3.55 but could not dual boot because of it?

#95 - technodon - December 28, 2012 // 6:53 am
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did you brick your console? lol.