How to install:
Download 3.55 OFW, the CFW patch file, the LV2 patch pkg and geohot's CFW, see below.
Install (or restore) OFW 3.55 - recovery mode may be needed.
Patch the OFW 3.55 .PUP file using the 'bspatch' utility:
bspatch PS3UPDAT_OFW.PUP PS3UPDAT.PUP Wutangrza-3.55.patch
Confirm that the resulting .PUP has this md5 sum:
Update to the newly created .PUP by moving it onto a
storage device into the PS3/UPDATE directory.
Now, update to geohot's CFW from XMB.
Install the LV2 package by moving it onto a storage device
into the root directory and installing it from XMB ('Install Package')
Done, you may now install multiMAN and run backups - remember that you
have to run the LV2 patch package after each boot.