Originally Posted by heywhosjake
just thinking out load but isn't it possible that he could QA flag, downgrade to 3.40 (or re-install 3.41 OFW) in Recovery & then update to 3.55 from XMB
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cant remember right now. i now that i tryed glevand 3.55 downgrade cfw but didnt remember that it worked or no? qa flag wont do nothing. service mode is 100% sure that works. a couple days ago i downgraded a nor phat ps3 that was on 3.41 spoofed mfw with matrixps3 dongle who had the same problem as above. the current ps3 now has 4.21 dex and whole process went without problem