3.70 Downgrade for Fat/Slim NOR Models - Teensy++ OR ProgSkeet - by dospiedras

[tthousand]

Please note, as of 8/17/11, this guide has been updated to remove a DANGEROUS ERROR: News reaches us today, coming from Spanish site Elotrolado member, Dospiedras. He has released the tutorial a lot of us have been waiting for, 3.70 Downgrade for Fat/Slim NOR PS3 consoles, meaning this tutorial is for all those out there with later models that use 16mb NOR Flash. This tutorial can be followed with either the Teensy++, or the ProgSkeet.

Use extreme caution when attempting this, and be prepared to solder your console. Also, make sure you know for certain, that you model did not come with 3.56+ firmware stock. The following has been translater by mximposter:

Hello everyone, i finally got it, we have a downgrader for slims consoles , this time a bit different that i did with fat models, i made it by the two flashers, progskeet and teensy ++,dope

We need:
fat or slim console with nor updated to 3.70 “DO NOT TRY With ANOTHER VERSION”
Solution to write and read the nor of the console ( flasher progskeet or teensy + +)
hxd program (which I use to edit hex)
FlowRebuilder v.4.1.3.2
a cold beer (this is important)
Downgrade.bin Http://pastebin.com/yuvJ5Leh

First we dump our NOR with a flasher, the file size must be “16,777,216 bytes” no byte more or a byte less, take several to be absolutely sure of what you do..get the dump “example jakemcallister.bin”and we have to get it in flowrebuilder to make it readable,the option is called bytereverse dump and extract

we do it and we will have a file but the extension will be bin.REV open it with the hxd and take out our personal data of the console EID, BOOTLOADER, CSID and METLDR

no need to put more data
We get it with the following way:in this case we get our METLDR in our prepatched image for downgrade attached in this tutorial
inside the folder where flowrebuilder had placed our.rev also has created another folder called “nameofthedump.EXT”in there are our personal files of our console and we need to get some to place em inside the pre-patched image that i attached

Open the hxd and open downgrade.bin and the metldr file that is inside the folder asecure_loader, we pick the tab on the hxd metldr and copy all the HEX content to get in inside the downgrade.bin
press control + g and write "820"thats the position of the metldr right click on the first line of the position 820
And choose “paste writing” and in the same way we introduce the other ones
the files to get in are:
METLDR: offset“810″ size “E960″
BOOTLOADER_0 Offset“FC0000″ size “40000″
EID: Offset “2F000″ size “10000″
CISD: Offset“3F000″ size “800″

then we take the downgrade.bin with the saved changes and we get in flowrebuilder with the option bytereverse dump and extract
This time the program will give us a error, but is a normal error, in fact is okay and will give us a file called downgrade.bin.REV

And thats the file you have to get in in the "flash" console
if all went well at writing ,turn on the console and you will see in the screen press the ps button or in English push ps button, DONT PRESS ANYTHING, turn off the console and put it in factory service mode, once done we need to put the correct file system for 3.55 lv2diag of jaicrab without reader and a special cfw

lv2diag:http://www.logic-sunrise.com/telecharge … icrab.html
cfw: http://pastebin.com/03MFDLGV turn onthe console with the usbstick with these two files in the right usb port (in the last) of the console and it will shut down for 10 / 15 minutes, turn on the console without any usb connected to verify that you did it correctly it will take you to xmb,
If all went well turn off the console and put your lv2diag
FILE2 of this pack:http://pastebin.com/gGETcxMR

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

Thanks to:
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 nor flash)
EussNL (his great support in the wiki that I use every day PS3DEVWIKI.COM)
Defyboy (for creating ps3devwiki)
To the whole channel darkps3 from irc-hispano.org for their support and many hours of testing we have hit hard mother****ers!
DemonHades (because if you had not post on your website with the lie you said about me, I had not met DigitalAngel or uf6667and these two helped me a lot)

and finally to the people who asked me in private to place a donate paypal button

greetings and from now on i will resume my work with the dual nand and that dump 3.6x that gives me so many problems hehehe

Ive updated the position of METLDR that was misplaced offset 810 " e960"size

MAJOR UPDATE:

PLEASE UPDATE NOTICE:

i fixed metldr location and leght please update

METLDR : offset "810" size "E960"

this is dangerous error! please fix in the mainpage

MAJOR UPDATE - 2:

We know have a correct and actual Spanish to English translation, thanks to mximposter. The above tutorial has been changed to represent both of these Major Updates.

This is mine transalations that took me like one hour, i speak spanish( native language) ...
.
..Transaltions by mximposter to ps3hax.net my mail mxsaiyan@hotmail.com

Sorry for missing punctuantions, im from my ipad hehe

For future translations and if im able hit me up, this is my first help for the scene, thanks to everyone and keep moving forward

Source: elotrolado.net

Update Source: dospiedras1973@ps3hax (and) mximposter@ps3hax

NAND or NOR? SKU Models

[The Central Scrutinizer]

So this is a very risky job. Well if anyone downgrades from 3.70 please post back results here. Thanks

[TheEnd]

Sketch, so very sketch. I'll take a look into this though. Thanks for posting the tutorial, I've been eagerly awaiting it.

[defyboy]

Backup your entire flash first and you will be fine.

[ogel2]

which one is supporting samsung NOR already? progskeet or teensy++??

[maori brutality]

lol i wish i could understand it? i would give it a shot just to see if it would help my situation?

[israyel]

about the 3.60 package signing if thats possible then why not just use it to make a newer custom firmware?

[tripod731]

Great Job, Guys, Keep it Up !!!

[Raikalo]

about the 3.60 package signing if thats possible then why not just use it to make a newer custom firmware?

You can't exactly just sign a package and make a firmware out of it. Gitbrew got a package signed on 3.6, YAY, but they've still got a ways to go.