Post: Downgrading From 3.55 To Old Firmwares
02-09-2011, 03:42 PM #1
Aspire.
The future is in your hands
(adsbygoogle = window.adsbygoogle || []).push({}); Guide To Downgrading On PS3 Fw 3.55
This is a guide on how to downgrade on Playstation 3 Firmware 3.55. Warning! Do not try with a slim! Only Some Slim PS3'S confirmed working, see below for model numbers which are the same as yours!
PS3 Models Tested on:

CECHE01 - 80GB FAT - FIRMWARE 1.90
CECHG01 - 40GB FAT - FIRMWARE 1.94
CECHG03 - 40GB FAT - FIRMWARE 1.94
CECHG04 - 40GB FAT - FIRMWARE 1.94
CECHK08 - 80GB FAT - FIRMWARE ???
CECHL03 - 80GB FAT - FIRMWARE 2.42
CECHL04 - 80GB FAT - FIRMWARE 2.42
CECH-2001A - 120GB SLIM - FIRMWARE 3.00
CECH-2003B - 120GB SLIM - FIRMWARE 3.00
CECH-2004A - 120GB SLIM - FIRMWARE 3.00
CECH-2102A - 120GB SLIM - FIRMWARE 3.21
CECH-2103B - 160GB SLIM - FIRMWARE 3.21
CECH-2104A - 160GB SLIM - FIRMWARE 3.21
CECH-2501A - 160GB SLIM - FIRMWARE 3.41 *
CECH-2502A - 160GB SLIM - FIRMWARE 3.41 *
CECH 2503B - 320Gb SLIM - FIRMWARE 3.41 *
CECH 2504A - 160GB SLIM - FIRMWARE 3.41 *
CECH 2504B - 320GB SLIM - FIRMWARE 3.42 *

[multipage=Step 1 : Downloading and Placing Files]
To begin with download the following files
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1.) Have a blank USB Flash drive plugged in to the computer
2.) Make sure it has been FAT32 formatted
3.) Once done, download the files above and extract them
4.) Place the modified PUP and the File 1 (lv2.diag) on the root of the USB
5.) Once done move on to step 2! Smile

[multipage=Step 2 : Putting the PS3 into Factory Service Mode]
1.) Make sure you have a device which Puts your PS3 into factory/service mode, devices e.g. Ipod, TI-84, Or anything else from this You must login or register to view this content.
2.) Make sure the PS3 is shut down fully e.g. Back switch off
3.) Plug in your downgrading/PSGrade device
4.) Switch on PS3 and quickly Press Power/Eject
5.) Now the PS3 will boot up in Service mode, Once booted into service mode correctly, remove your device!
6.) You should have a red box behind the XMB saying "Factory/Service Mode"
7.) Move on to Step 3!

[multipage=Step 3 : Downgrading PS3]
1.) Once in Service mode, hold down PS button on controller and proceed to turn off PS3.
2.) Plug in your USB flash drive in the second USB slot and turn on PS3
3.) Your screen would be blank, while PS3 is downgrading!
4.) Then the PS3 should turn off by itself.
5.) Remove USB and turn on PS3
6.) The PS3 will still be in service mode
7.) Check to see the firmware by going to System settings/System information/Firmware will be displayed there. It should say 3.41 BUT the PS3 will think it's on Firmware 3.56
8.) Now you can downgrade even further to any Firmware you want!
9.) It is recommended to downgrade to 3.15 and then Update to 3.41 to originally jailbreak your PS3.
10.) To Downgrade even further, all you have to do is replace the .PUP file in your USB with another one! You must login or register to view this content.
11.) Move onto Step 4!

[multipage=Step 4 : Getting Out of Factory/Service Mode!]
To get out of factory/service mode, do the following:
1.) Go back to your Computer/laptop and plug in USB
2.) Now replace lv2.diag with the "FILE 2"
3.) Make sure the PS3 is turned off, with the red light on
4.) Place The USB into the 2nd USB port and turn on PS3
5.) Then within seconds your PS3 should turn off by itself!
6.) Turn on PS3 again and BOOM! Cool Man (aka Tustin) Your on your firmware you chose to downgrade to!
7.) Move onto step 5 if your PS3 runs into an error!

[multipage=PS3 ERROR HELP!]
If your PS3 for some reason has an error/faulty, then please follow this!
Different types of Faults!
If you chose to downgrade to an earlier firmware e.g. 1.50
While it was downgrading the PS3 would of kept blinking and wont turn off when it is supposed to. If you pulled out the cable or turned off the PS3 via the back switch, then turned on your PS3,then you should notice that once PS3 is turned on, it will turn off by itself. To fix this issue, follow these steps!
1.) Replace your update.pup file with 3.15!
2.) Then back to the PS3 and plug it in and turn on PS3 and it should Re-Downgrade itself and switch off by itself. Then it should boot up in service mode and it all should be fine! After follow the previous steps on how to get out of service mode!

[multipage=Credits]
Credits to KaKaRoTo for finding out how to downgrade!
Credits To Ps3-hacks for the download links
Credits to Me Cool Man (aka Tustin) for providing NextGenUpdate with an easy tut =D
This did take me time to make, so thanks are appreciated Smile
Last edited by Aspire. ; 02-10-2011 at 08:50 PM.

The following 18 users say thank you to Aspire. for this useful post:

frag06, frub3nz, HaHa..., ibombo, iPewsen, ipodtouch44, Mr Hankey, Mr.Kane, P$ycho, Sk8erFerSur, soebred, St0rM, toxic90384109284, Vaner, w8t4it, Waackoo, xshadowedx, Yeezus Christ
02-18-2011, 07:36 PM #74
Aspire.
The future is in your hands
Originally posted by Lov3R View Post
I Had a 3.50 ps3 and downgraded to 3.41 last year so is this guna work and not brick my slim?

If your model number is there Smile

---------- Post added at 07:36 PM ---------- Previous post was at 07:33 PM ----------

Originally posted by ImmortalMods View Post
Ok my 3.55 fat ps3 is in recovery and when i turn it off and plugin
my usb drive thats not formatted cause i got my games on it

into the second usb slot and turn it on

it shows the icon and my usb loads for a bit,

and then it just starts up ps3 like normal back into recovery menu

i got file 1 lvl2diag.self in root as well as the update.watever file that was included in that download of this thread.

i further more go into system settings and it still says 3.55.

WHAT AM I DOING WRONG?

It has to be FAT32 Formatted! or else it wont work -.-
02-18-2011, 08:13 PM #75
iNikush
I'm back from the dead
it worked thanks im on 3.21 now
08-25-2015, 03:38 PM #76
mozan
Gobble
does this work
08-25-2015, 07:31 PM #77
EncepT
I defeated!
i gladly have the first Fat :3 thanks about the info Happy
Last edited by EncepT ; 08-25-2015 at 07:31 PM. Reason: Corrected somethin C:
02-23-2016, 08:05 PM #78
do u need to be on CFW or OFW tried 8times ?
02-23-2016, 08:37 PM #79
#Dragoss
You talkin to me?
can't belive someone dug this grave....

Originally posted by marcuschidgey View Post
do u need to be on CFW or OFW tried 8times ?


you need to be on 3.55 firmware or lower
02-23-2016, 09:12 PM #80
ah well my ps3 use to be 3.55CFW and a friend gave me a link but it put me to 4.78 OFW and its fucked it Do u know any ways through without e3flasher
02-23-2016, 09:12 PM #81
and this worked on my psp but not my ps3

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