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PS3 Slim 3.70 Unit Downgraded to 3.55 Kmeaw Custom Firmware


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180w ago - Today Italian site DiGiTaLAnGeL (linked above) reports that they have successfully downgraded a PS3 Slim 3.70 Firmware unit to 3.55 Kmeaw Custom Firmware, followed by a New Method - PS3 Downgrade v2 Supports all NOR Flash from TwoStone.

Similar to the PS3 Firmware 3.6x Downgrade via Infectus, this round they have downgraded a PlayStation 3 v3.70 Firmware console using ProgSkeet with the assistance of Dospiedra with a roughly translated PS3 3.7x Downgrade for Slims and Fats with NOR Flash now available.

To quote, roughly translated: The first downgrade to 3.70 on PS3 Slim 3:55, DiGiTaLAnGeL tested by us!

For the first time, we have been involved in something truly spectacular We were the first in the world to test the downgrade from 3.70 to 3:55 on a PS3 Slim (With flash memory, "NOR") using the ProgSkeet and patched some files provided by dospiedra, a famous Spanish coder already riding high for having discovered the method of going back to 3.55/3.41 with the PS3 (FAT flash memory "NAND").

After several attempts, in collaboration with dospiedra, we got to go back from 3.70 to 3:55, enter the factory mode with a simple key to jailbreak, rifleshare a modified version of 3:55 to prevent the SYSCON (the registry in between downgrades) was consulted during the downgrade and now we are happily at 3:55 KMEAW!

With this version of moddata 3:55, you can perform a memory dump today and you can switch on the fly from 3:55 to 3.70 without having to do this all the time-consuming process: using progskeet fact you can go straight to 3.70 changed to 3:55!

Dospiedra said it will release details on the patches applied to the NOR and the update file as soon as possible.

New life for those who arrived too late to enjoy the benefits of the 3:55?












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#35 - mushy409 - 180w ago
mushy409's Avatar
Just like to say congrats to those guys. Believe me a LOT of hard work has gone into this.

I was so close to releasing some stuff of my own, but I've been beaten to it... Hats off tho guys, well done! (damn you infectus!)

#34 - dyceast - 180w ago
dyceast's Avatar
Amazing Stuff. But good luck using that tutorial (kindle the console ???) lol

#33 - PS3 News - 180w ago
PS3 News's Avatar
Here is a guide from dospiedras1973, roughly translated: elotrolado.net/hilo_downgrade-3-7x-para-slim-y-fat-s-con-nor-flash_1659475

PS3 3.7x Downgrade for Slims and Fats with NOR Flash

Hello all, I got it at the end we have a downgrader for slim consoles this time is different than it has done with consoles fat, I've got the two flashers progskeet Teensy++ and Al nougat!

We need:

  • Fat or slim console with updated standards to 3.70 "DO NOT TRY TO ANOTHER VERSION"
  • Solution to write and read the rules of the console (or flasher progskeet teensy++)
  • HXD program (which I use to edit hex): [Register or Login to view links]
  • FlowRebuilder v4.1.3.2: [Register or Login to view links]
  • A beer (this is important)
  • Downgrade.bin: [Register or Login to view links] / Downgrade v2: [Register or Login to view links]

First dumped our NOR flash, the file must accurately measure "16,777,216 bytes" neither more nor less. Draw out several to be absolutely sure of what you do.. cojemos the dump "example josejuan.bin" and we have to introduce it in a file flowrebuilder to make it readable (bytereverse) the option is called bytereverse dump and extract rules. what we do and we will create a file but the extension ends in. bin.REV

Open it with the hxd and took our personal data to the console EID, BOOTLOADER, CSID and METLDR no need to put any more. take them out as follows:

Choose for example in this case to stick our METLDR prepatched to downgrade the image attached to this tutorial

Inside the folder where we put the flowrebuilder. rev also has created another folder called "nombredeldump.EXT" then there are our personal archives of our console and we need to introduce them to catch some pre-patched image that I have since opened the hxd and open the file and metldr downgrade.bin is inside the folder asecure_loader.

Choose the tab on the hxd metldr and copy the entire contents into HEX and enter the downgrade.bin and press control + 820 g write position is that of METLDR. right-click on the first line of position 820 to give to "stick type" and so the same way we introduce others to enter the files are:

  • METLDR: Position "820" size "EDE0" (Note: Correction by dospiedras1973: Correct Offset "810" size "E960")
  • BOOTLOADER_0 Position "FC0000" size "40000"
  • EID: Position "2F000" size "10000"
  • CISD: Position "3F000" size "800"

Then we take the downgrade.bin with saved changes and we put in the option flowrebuilder bytereverse dump and extract rules PROGRAM THIS TIME WE WILL GIVE AN ERROR but is a normal error, if error occurs is that okay done and you create a file named downgrade.bin.REV will be the file you have to enter in the console "flash"

If all went well to finish writing you kindle the console and will press the button or English ps push button NO NOTHING PULSE IS apagais the console and put it in factory service mode once this need to put the correct file system for 3.55 jaicrab with lv2diag of cfw without reader and a special:


Kindle the console with the stick with these two files on the usb device into the far right of the console and shut down one to 10 / 15 minutes, kindle the console without any usb connected to verify that you correctly leads to xmb If all went well apagais the console and you put your lv2diag FILE2 of this pack: [Register or Login to view links]

The console will turn on and 20 seconds will turn itself off and CONGRATULATIONS you have your console in functional kmeaw cfw 3.55 100%

Thanks:

DiGiTaLAnGeL (Tester with progskeet)
Glevand & mfw builder team (cfw)
NDT (Assistant) is a very good person
JaiCraB (lv2diag without reader)
Robs1 (my guide with the normal flash)
EussNL (his great support in the wiki that I use every day PS3DevWiki.com)
Defyboy (to create PS3DevWiki)
A whole channel #irc-hispano.org darkps3 for their support and many hours of testing we have hit eh!
DemonHades (because if you had not put the cover on your website with the lie that contastes on me, I had not met or uf6667 DigitalAngel and these two helped me a lot)

Download: [Register or Login to view links] / [Register or Login to view links]

From dospiedras1973: by psicoleo, uf6667 and I have made an application (PS3 Transplante v1 above) to automate the use hex editors to modify the downgrade.bin bytereversed you put your flash in donor and recipient and will downgrade.bin in the process hxd without...

you not need hex edit anymore... and "If at any time during the downgrade DISPLAY RED (RSOD) STOP PROCESS IMMEDIATELY I WILL RELEASE A FIX SOON" Please be patient





PS3 Models: NAND 256MB / VFLASH 16MB (NOR)

PS3 Fat:

  • CECHA = 256MB
  • CECHB = 256MB
  • CECHC = 256MB
  • CECHE = 256MB
  • CECHG = 256MB
  • CECHH = 16MB
  • CECHJ = 16MB
  • CECHK = 16MB
  • CECHL = 16MB
  • CECHM = 16MB
  • CECHP = 16MB
  • CECHQ = 16MB

PS3 Slim:

  • CECH-20..A = 16MB
  • CECH-20..B = 16MB
  • CECH-21..A = 16MB
  • CECH-21..B = 16MB
  • CECH-250.A = 16MB
  • CECH-250.B = 16MB
  • CECH-250.A = 16MB
  • CECH-250.B = 16MB
  • CECH-251.A = 16MB
  • CECH-251.B = 16MB

Update: New Method - PS3 Downgrade v2 Supports all NOR Flash via TwoStone: darkconsoles.com/foro/viewtopic.php?f=7&t=16

Download: [Register or Login to view links] / PS3 3.70 to 3.55 Downgradable Model List / Progskeet QT Flasher for PS3 Test and Localized Versions / ProgSkeet PS3 NOR Downgrade v2 Patcher

I updated entire patch method with new v2 with some fixes, now be compatible with all consoles except 2504b DATECODE 1B and 3000 consoles. Write a new method consisting of 6 patches, this time we will use to edit the dump hxd original of your PS3 (make backup)

Steps:

First check if our standards Dump bytereversed, to start patching the original dump.bin file we must first ensure that the beginning of the flash at offset 200 is readable "IFI" if instead you see "FI.I "Your rules need to patch it bytereverse before (a and go back to him to put it in bytereverse the console to be read again" FI.I "when we patched the files and offset's a patch are these

[Register or Login to view code]


Easy, normal and cojemos the patch1 for example, copy content and paste it patch1 0C0010 writing and so the rest (the file size does not vary after the stripe)

The rest of the downgrade is the same as before, factory mode, and pup jaicrab lv2diag nochecks.pup of the previous release.

#32 - NTA - 180w ago
NTA's Avatar
Epic stuff! All that time paid off in the end. Glad to see the results.

#31 - anon777 - 180w ago
anon777's Avatar
Wooow!!!

#30 - Malax - 180w ago
Malax's Avatar
Quote Originally Posted by EiKii View Post
This method doesn't need a dump from 3.55, nor do the other downgrade methods, and for 3.56 service mode, most likely yes, as you patch 3.55 cos and then are able to leave service mode

Oh wow, this is good news. I was thinking you needed a previous dump of your 3.5 firmware, but if not and essentially any 3.7 can perform the downgrade, that's great news.

#29 - oVERSoLDiER - 180w ago
oVERSoLDiER's Avatar
That's awesome News ! Hope to see more proofs about it or maybe a update/downgrade *.PUP in the future.

But great process, indeed.

#28 - EiKii - 180w ago
EiKii's Avatar
This method doesn't need a dump from 3.55, nor do the other downgrade methods, and for 3.56 service mode, most likely yes, as you patch 3.55 cos and then are able to leave service mode

#27 - gunman2011 - 180w ago
gunman2011's Avatar
Good news.. so is there any hope now to fix the 3.56 [ factory service mode ] stuck, my ps3 is sleeping since long time.

please anyone has any idea lets us know many people will be happy for this.

#26 - saviour07 - 180w ago
saviour07's Avatar
Good news

I think this method requires 3.55 on the ps3 to begin with before upgrading to 3.70 though, so then it can be stored to the ProgSkeet and then reapplied after an upgrade has occurred - kind of like a checkpoint for the Firmware to restore to.

Next step probably is going to be Dual Firmwares enabled via something like this, although I suppose most people would want a usb version lol

 

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