4.11 --> 3.55 or jb

So yes, title kind of explains it. Im running on 4.11. I want to ether downgrade to 3.55 or anyother lower firmware. I dont have 2 ps3's, nor the money to afford an eflasher. Ive been looking for a while, i really want to host Cl's on mw2 again, but i cannot find one that works. "No applicable data found", always get that. All i want os cfw + comginie (sorry for misspelling if its wrong). Elite Mossy mod menu. I can do that, just need a working cfw download. Any ideas? Help? Also, Please add me so we can communicate faster (if youre willing to help of course)

Godlyx_xBeast - psn