Psp can be ran now without Cobra as well. Compatibility is slightly higher using Cobra but not enough to warrant use of their crappy CFW IMO 4.30 their 3.55 is solid. Mine is used to go into service mode only now. Even then I do not even have it as I loaned it out to my buddy that refuses to leave 3.55.
PS3 CECH-2501A [CFW] & CECH-3001 [OFW]/ PS2 SCPH-3901 & SCPH-7501/ PS1 SCPH-5501
Mod Cobra 4.46 v7.00 w/ E3 Flasher [CFW] & Cobra ODE 4.50 [OFW]/ Mod HDD-OSD [Phat] & Modbo 4.0 [Slim]/ Mod MM3
HDD 1tb [CFW] & 640gb [OFW]/ HDD 640gb & OPL v0.92 w/ 1.5tb SMB