PS3 Is QA flagging on 4.90 enough to downgrade?

[afastaudir8]

Essentially, I enabled the QA flag on my PS3 (CECH-2001A, evilnat 4.90) and I have the debug options.

Do I just need to enable system update debugging and then install an OFW or CFW version of an older version from the XMB?

Thanks

 

[Coro]

Do I just need to enable system update debugging and then install an OFW or CFW version of an older version from the XMB?

you can downgrade with just qa flags enabled. (leave it enabled always so that it is ready if you need it).

system update debug allows you to keep up to 20 pups on the hard drive to install without usb needed. put them under dev_hdd0/updater/01 with whatever filenames you want. you will also have an option to copy to hdd any pup you install from usb. it disables the option for internet update so it can be used just to help prevent accidental updates.

 

[afastaudir8]

Oh, interesting.

There's just one thing I don't get, how do I obtain PUPs?

 

[GuilloteTesla]

You can get them here on the forums, or in some other places. Be careful though, always download CFW from trusted sources.

Here are some of them:

• https://archive.midnightchannel.net/SonyPS/Firmware/index.php?cat=CEX
  
• https://darthsternie.net/ps3-cfws/

Also, you should never have to install OFW again. If you do it, you will have to run the jailbreak process all over again.

 

[afastaudir8]

So if I downgrade using the debug menu to, say, 3.55 CFW, I should be fine right? Would there be data loss?

 

[Coldheart2236]

So if I downgrade using the debug menu to, say, 3.55 CFW, I should be fine right? Would there be data loss?

No need to downgrade that low; stick the 4.8x> firmware if I were you.

 

[afastaudir8]

I mean, my goal is to go to 2.70 or 2.80 because I want to mess around with otheros (since I have no idea how to do otheros++) plus I want to have the original startup.

 

[GuilloteTesla]

Then your best option would be to downgrade to FW 3.55 and the downgrade again to FW 3.20.

It's not so simple to downgrade the PS3 that low. There are some success cases here on the forums, but I repeat, it's not easy.

 

[Coro]

really low firmware has no recovery mode.

 

[Berion]

I mean, my goal is to go to 2.70 or 2.80 because I want to mess around with otheros (since I have no idea how to do otheros++) plus I want to have the original startup.

https://www.psx-place.com/threads/f...m-usb-ps3-ps4-ps5-psp-pstv.33737/#post-376056

 

[afastaudir8]

really low firmware has no recovery mode.

Isn't that just the case for 1.xx?

https://www.psx-place.com/threads/f...m-usb-ps3-ps4-ps5-psp-pstv.33737/#post-376056

Also, that's interesting. So essentially, if I want to go to a low version, I have to do 4.90 CFW -> 3.55 CFW -> the version I want?

 

[Coro]

Isn't that just the case for 1.xx?

it was introduced in 2.50 according to the devwiki.

I have to do 4.90 CFW -> 3.55 CFW -> the version I want?

it seems to have more success that way.

 

[NiQ]

it was introduced in 2.50 according to the devwiki.


it seems to have more success that way.

Official OtherOS was removed in 3.21 iirc. They can use some firmware between 2.50 and 3.20

 

[Berion]

Last fw with official OOS support was 3.16. So if You are on 4.xx, You need go down to 3.55 and then to e.g 3.16. But take in mind that You will not downgrade below factory fw version. I.e if factory fw ver. was 3.50, You cannot install 3.41 etc.

 

[Coro]

according to devwiki, 2001a should have came with 3.00 installed but is downgradable to 2.70 (unless of course it was refurbished at some time).