(adsbygoogle = window.adsbygoogle || []).push({}); Noob Tutorial: How to downgrade/flash your PS3 from firmware 3.70 to 3.55 via ProgSkeet/Teensy++ and install 3.55 Kmeaw CFW

Most of you have heard the You must login or register to view this content. on firmware 3.70, helping those buying newer or updated PS3 slim consoles to the scene. At the moment push aside “soft modding” and its time to bring on the good ole’ soldering iron back out.

This new method of downgrading basically requires the soldering of a multi-console-compatible chip known as ProgSkeet (or clone) which you can find or purchase
You must login or register to view this content. …or you can use Teensy++ board if you still have those from the good dongle days. A solder-less ProgSkeet is in the works, more info You must login or register to view this content..

Now the original tutorial was released in a very technical form and in Spanish, but we at PS3Hax have got you covered, and are bringing you easy to follow tutorial that a noob can follow on. This tutorial is long, but it is more detailed than complicated, making sure your bases are all covered

You must login or register to view this content.


Highly advised you read this tutorial fully once, and then again and read the comments in this thread and the other threads linked above to get a GOOD understanding of what your getting yourself into and how the entire process works. Remember, this should be a fun and rewarding experience

DISCLAIMER: PS3Hax.net OR Nextgenupdate ps3church...................is not responsible for any damage caused to your system. We do not claim credit for this method, we simply have compiled and reorganized the information so it is easier to follow. I kindly request for other sites to not rip this entire tutorial to their websites, but instead link to this page if you wish to share it on your webpage. This page will be actively updated so please keep checking back to find solutions to encountered/discovered problems.

STEP 1 – Preparation

1. A PS3 (phat or slim) running PS3 original firmware 3.70 and has NOR memory, not NAND, and has ProgSkeet/Teensy++/Clone installed (You must login or register to view this content.)
2. Flow Rebuilder Tool You must login or register to view this content.
Downgrade.bin [[url=][Download Here][/url]
Automated HEX File You must login or register to view this content.
LV2Diag You must login or register to view this content.
Modded LV2Diag You must login or register to view this content.
Kmeaw CFW PUP File (3.55) You must login or register to view this content.
ProgSkeet Drivers and Latest Software You must login or register to view this content.

STEP 2 – Some Background
If your a noob (and I assume most of you are), it may be a good idea to have some what of a idea on what NAND/NOR is. It is basically the PS3 flash memory. If you want to get a better understanding of the PS3 system and its various components, you should You must login or register to view this content.

To summarize now we are going to be downgrading a PS3 via NOR flasher, so the PS3 MUST have NOR memory most PS3 units have NOR now, the stock/initial PS3s (phat) that were released had NAND, there is a chart linked above so you can make sure. As of now, all SLIMs have NOR memory so your good to go

STEP 3 – Installing ProgSkeet
First thing is first you have to install ProgSkeet. You can install Teensy++ board as well, or any other ProgSkeet clone but I don’t know how they work and I assume you need to substitute the tools/files for Teensy++.
So there are plenty of good threads to first checkout related to ProgSkeet, for starters this is what ProgSkeet is:

Works on various other devices (in addition to PS3) and consoles including Xbox 360 and Wii.

Here is a sample image of some ProgSkeet installs (gets you an idea what your getting into):

You must login or register to view this content.
You must login or register to view this content.
You must login or register to view this content.

THERE IS CURRENTLY A SOLDERLESS CHIP IN THE MAKING, BUT AS OF NOW (8/20/2011), YOU MUST SOLDER AND PERFORM THIS METHOD IF YOU WISH TO DOWNGRADE FIRMWARE 3.70
More info on solderless version You must login or register to view this content.
1.Make sure your PS3 first has NOR memory, all SLIM PS3′s do, the older “phat” PS3 have NAND. Check if your console has NOR memory
You must login or register to view this content.
2.Find the right pinout for your PS3 motherboard You must login or register to view this content.
3.Gather soldering tools, resin, and wire.Recommended gauge for wires: 24 (anything from 20-26 AWG is fine). Keep them at ~20cm each. – Note: 40/80 wire Floppy cables won’t work, to see a full list of compatible wires see You must login or register to view this content.

Hei man, it work's? o.O

I downgrade my PS3?!


WAAAAAAAAAAAAAAAAAAAO <3

There are many people who did it. Just not in this forum..

I'm not really sure if I would wanna try this

---------- Post added at 12:24 PM ---------- Previous post was at 12:23 PM ----------

Because, I am not pro at putting together a ps3/facepalm

then you gonna wait a min for usb downgrade

I can wait...but thats not gonna prolly happen for a long time bro

Hey man... did you steal MBO's sig...

lol i will remove it but i like it tho xD

I dont blame you, we ALL like it

Stupid "LETS DESTROY MY PS3" forcing me to buy a new one..... these people that want you to rip open your ps3 "warranty void" then solder to it "DESTROYING THE PS3" are people that prolly work for sony just trying to boost sales.