(adsbygoogle = window.adsbygoogle || []).push({}); EDIT: If it's not working for you, then I'm sorry. This worked for me, and I'm online on my 3.55. I thought I would post WHAT I DID to get back online to try to help others.
SEN/PSN Enabler: You must login or register to view this content.
Download PSID patch: You must login or register to view this content..
Install .pkg on ps3.
Start PSID patch.
Click "X" about 5-6 times(spoofs PSID).
Click "[]" about 5-6 times(spoofs Console ID).
Click "^"(Triangle) to exit the homebrew.
Reboot PS3.
Sign in.
That is exactly what I did to sign back in on my banned 3.55 KMEAW PS3.
P.S. I would highly recommend using a dummy account while online, and not your main accounts'.

is this the old PSIDpatcher back from 3.55 ?

I am on 4.21 atm so I cannot test. For all the 3.55 Users out there, I hope the best for you

PLEZ CODE 800a27

testing now...

EDIT-

Didn't work for me

would the PSID patch work on my 3.55 with regero cfw?

i got it to work followed the steps made a new account and got on the psn store but then i got a error and now when i try to do it again i just keep getting this error code (8002A224) and when i reboot the console and just try to log in i get this error code 8002A227 thats with out using psid . on kmeaw 3.55

same happens to me

So far from what I'm seeing, is that this method does not seem to work! Keep posting your results people so that we know 100% that it is a failure!

Merk you lovely blueberry muffin you! FTP transferring Mafia II to the PS3, once that's done I'm sooo giving this a try!