Originally posted by another user
UPDATE 7: 02/22/2015 - "Back Online" REBUG & PS3 ITA TEMP FIX
iT Seems That You Can Still Sign in Online With Rebug 4.4x and 4.6x and Ps3 iTa 4.xx.To Sign Back Online Follow steps.
STEP 1= Open Up Rebug ToolBox ,Then Press D-Pad Right and You be at 'Selector' Then
Scroll Down To '

ebug Menu Type' and Set it To CEX QA.Then Quit Rebug ToolBox.
STEP 2= GoTo Settings in Xmb and Scroll Down To '

ebug Settings' and click X,Then Scroll
Down To 'Nav-only Np' and set it To "ON" .and Thats it You can Sign Back Online.
PS3 ITA STEPS:
You can do that too on CFW ps3ita..
- Start Cfw Setup v4
- Go to “Sysconf_plugin.sprx type:” and set it to “CEX”
- After restart, go in debug settings and you should find “nav-only np” option.