I updated my REBUG 4.21 to 4.46 and had the same problem.
Try This:
Download PS3ita Manager pkg, open it and press
start then network tools then
restore original console id (EID5) then try to log in. (Download for PS3ita manager below)
Attaching Tools:
Is your ps3 connected with ethernet cable?
Have you downloaded target manager on PC and connected with PS3?
Download for PS3ita Manager:
You must login or register to view this content.
Hope It Worked