Originally Posted by v8s10
Downgraded PS3's CAN use TB CFW, and Cobra, or Kmeaw or any other firmware your console is able to install.
Once you have successfully downgraded (from say 3.70 with a hardware flasher) you will be on a lvl1 patched firmware with checks disabled, say Rogero v2 for example.
All you have to do is use rebug's Toggle QA pkg to enable QA on your console.
Then go into the QA menu (using button combo) and turn on update debug.
Load 3.41 or 3.55 OFW on your usb reboot your PS3 into recovery mode, and use the update option and update the firmware (actually downgrade).
In the recovery update menu it will ask for whatever the highest firmware your console was on (mine was 4.00) but will install 3.55 no problem.
This will reset the syscon to whatever firmware you are downgrading to (3.55 OFW for example)
Now install TB or Cobra cfw from the XMB.
I dunno if QA flag reset syscon, but i suggest you to prove what you say whit a video.
Maybe you figured out the most usefull trick of last 4 month or maybe you just trolling us, i cant know this....but if i was in your place, whit 3 post i would support what i say whit some proofs.
Waiting for confirm, if this is real gz man for the tip