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Guide: PS3 Slim CFW 3.55 to OFW 3.70 with 2 HDDs Fast Swap


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185w ago - Following up on the initial PS3 Slim 3.70 Downgrade and PS3 3.7x Downgrade for Slims and Fats with NOR Flash news, this weekend Italian PlayStation 3 hackers DiGiTaLAnGeL (linked above) have made available a guide to fast swap PS3 Slim CFW 3.55 to OFW 3.70 with 2 HDDs and ProgSkeet followed by a New Method - PS3 Downgrade v2 Supports all NOR Flash from TwoStone.

To quote, roughly translated: Today I'll write a tutorial to "fast-swap" between CFW 3.55 and OFW 3.70, using 2 HDDs... at the end of the tutorial, you'll be able to swap between the firmware just flashing a dump on your PS3 using Progskeet. (instead of downgrading and losing all data).

The first steps are not so easy, so take your time and go on, by the way, you must have some skill with Progskeet, and it must be 100% working on your console.

What we need:


We need 2 HDD because the NOR flashes stores some parts of the current FW on the HDD so we will need 2 HDDs, one is for 3.55, and one is for 3.70.. We will call those HDD "A" (for 3.70) and "B" (for 3.55) don't mix them up!

Starting with a PS3 Slim with OFW 3.70.

1. Plug in HDD "B", format and prepare it if it's required by the PS3 and you should have your 3.70 up and running.
2. DUMP your actual NOR and call it "original dump 3.70.bin"
3. Now flash your "downgrade.bin" (edited with the personal data found in "original dump 3.70.bin")
4. Turn on your PS3 and be sure that the PS3 is asking you to press the PS button (downgrade.bin flashed correctly )
5. Insert a 3.55 Downgrade dongle and enter factory/service mode.
6. Copy Lv2Diag.self by Jaicrab and the 3.55 NO CHECK UPDATE renamed as "PS3UPDAT.PUP" in the root of your USB Stick.
7. Plug in the USB Stick in the most-right USB port of your PS3 and wait for it to turn OFF.
8. Leave the factory mode using the other Lv2Diag.self
9. After the reboot, you need to configure and set up your system... now you have a fully working 3.55 CFW based on KMEAW "NO CHECK".
10. DUMP your actual NOR and call it "swap dump 3.55.bin"
11. Unplug HDD B and Plug in HDD A.
12. Turn on your PS3, plug in your USB Stick containing official 3.70 update and press start+select when asked.
13. When the PS3 reboots, check that the system is fully working and DUMP your actual NOR and call it "swap dump 3.70.bin".

NOW IT'S OVER! You should have "swap dump 3.55.bin" and "swap dump 3.70.bin" ... Now you just have to swap HDD and flash the corresponding dump:

  • HDD A = swap dump 3.70.bin
  • HDD B = swap dump 3.55.bin

WARNING: Do not install other CFW than the "NO CHECK" one... because it's used to make the "fast-swap" working... if you flash something different you will not be able to go between the 2 FWs. This CFW disable the Syscon checking at the startup... so it will not freeze or complain when the syscon says "3.70″ and your FW is 3.55

In case you wanna update your console with a future "3.80″ or-so firmware. Do not update your console when you are running 3.55 firmware! You have to go to "swap dump 3.70.bin" and then update as usual (XMB or recovery)... By the way, the downgrade is confirmed working only on 3.70... we haven't tested it on other FWs, you could lose the possibility to go back to 3.55!


Guide: PS3 Slim CFW 3.55 to OFW 3.70 with 2 HDDs Fast Swap

Stay tuned for more PS3 Hacks and PS3 CFW news, follow us on Twitter, Facebook and drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene and PlayStation 4 scene updates and fresh homebrew PS3 Downloads. Enjoy!
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Comments 95 Comments - Go to Forum Thread »

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#25 - superkar38 - 185w ago
superkar38's Avatar
Hello please, is anyone knows when 3.70 downgrade will be available to 3.55? is it really 3.70 to 3.55 are available now, when will be available please?

#24 - Nadrian - 185w ago
Nadrian's Avatar
Quote Originally Posted by elser1 View Post
that's kool. does anyone know if this progskeet device will be made available soon?

i can't find it for sale in australia..

Someone previously posted a link to a website called oz3ds that was selling it for something like US$66 with free shipping (I think it said that it was an Aussie based store).

Quote Originally Posted by XSamurai View Post
So is there any other difference between the slim and the phat then the size of the nand?

Think I read in the past that the smaller nand versions have parts of their firmware stored on hdd. So is it now just about to adapt it to the smaller nand size or will we get in trouble cause of the external storage of some part of the fw on hdd?

If you got any infos about that fact, pls let me know!

it depends, which motherboards your comparing.

#23 - Ezio - 185w ago
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Quote Originally Posted by tripleh1567 View Post
download link?

It's too soon yet.

#22 - tripleh1567 - 185w ago
tripleh1567's Avatar
download link?

#21 - Ezio - 185w ago
Ezio's Avatar
Quote Originally Posted by Lacourse2012 View Post
3.70 custom firmware perhaps soon?

No, I don't believe. Did he go in FSM with a simple dongle on 3.70? I think it isn't possible because from 3.60 you cannot more use jailbreak to go in FSM.

But to downgrade from 3.60+ using a flasher you need to be in fsm or you have to patch lv1. However I'll wait for more explainations from dospiedra, this news (and 3.55 modded) are very interesting!!

ps: uf6667 said "Also big surprise also for 3.56-3.70 users "

#20 - jamel240 - 185w ago
jamel240's Avatar
when... soo coool.. (impatient me)

#19 - Lacourse2012 - 185w ago
Lacourse2012's Avatar
3.70 custom firmware perhaps soon?

#18 - Pcsx2006 - 185w ago
Pcsx2006's Avatar
Great news guys.

#17 - HACKDEPS3 - 185w ago
HACKDEPS3's Avatar
look we need to get the keys so we can sign our own homebrew and to create games and update files. someone has these keys already so give them out maybe not websites but chat with people and have it spread out idea xlink kai or something.. if some one has the keys email them to someone or something give them to me i'll go down for it.

#16 - tonybologna - 185w ago
tonybologna's Avatar
This is good news for many!

 

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