my personal opinion you have 2 options:
Buy a second ps3 for ofw and online and play new games on that or, update your current ps3 to play online if you can't afford a 2nd ps3.
I know I am goin to get flamed for saying this (but who cares) the ps3 scene aint going anywhere for a long long time, it's stuck in limbo and will be like that for a while.
PS3 Slim v3.55.4 CFW Rebug 1TB Internal, External 2TB
XBOX 1 with XBMC
Wii 3.2E + Cfg UsbLoader External 1TB
DS lite & DSiXL + Cyclo ds 8gb micro sd DStwo 16gb micro gd
PS2 V14 legit matrix infinity modchip
PSP slim 2006 5.00 M33-6 8gb memory stick pro duo
PSPgo with 16GB M2 6.60 PRO B10