You will need tools like RazorX's CFW Eboot & PKG Resigner v1.16. You will need to download the PKG file on your PC then extract the contents will the tools and resign the eboot.bin to 3.55 and make a new PKG file. That app will do it all for you and it very straight forward. This will fix jsut about everything for any FW version. Everything I have tried I have had success with this app instead of needing several of them to do the job it is an all in one tool for all your needs. The reason you see the boot loop is because ti is signed with a different set of keys other then the ones used in 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