"Basically it's a simple PKG you need to launch before running any backup manager. It will patch lv2 and add syscalls in memory. They are removed once you power off. Safe and efficient!"
"First run the PKG, then run the Backup Manager. When rebooting, you need to repeat the process."
Download PKG: http://kmeaw.com/tmp/lv2.pkg
If you don't have Wutangrza's Firmware installed then just download Kmeaw's prepatched CFW PUP and install over 3.55 OFW
Kmeaw Prepatched CFW Download
Mirror 1 | Mirror 2
More info (instructions): PS3 CFWs with backup managers
Basically kmeaws CFW has peek/poke and allows you to bypass PKG checks, like how it used to work on 3.41 . Therefore you don't need to sign stuff like Geohots CFW.
Wutangrza's CFW is basically what flukes1 released it just has peek/poke enabled but you can't install PKG's.
Geohot's CFW can be installed over the top on Wutangrza's CFW and allows you to install special signed PKG's.
This LV2.pkg patch can be loaded from any CFW that has peek/poke, and adds syscalls for backup managers etc.
On Wutangrza's/Geohot Firmware you have to use pkg's signed with geohots tools.
On Kmeaw's Firmware you can install any pkg. Like the ones from 3.41 and ones signed with geohot tools.
Original FW PUP md5 before patching: ca595ad9f3af8f1491d9c9b6921a8c61
Patched PUP md5 after patching: 2be5e87a22bf1e7f48e98fcabd38977b
If you are on Wutangrza+geohot fw, you dont need to flash the new firmware, just install the package, and run it every time the ps3 boots before running apps that need PL3.
Otherwise, it is suggested that you upgrade to 3.55, Upgrade to this patched PUP, then install the lv2.pkg.
This is only until apps are updated to include this patch themselves, as then you wont need to run the patcher on every boot.
For Stock ps3's
1. update to official 3.55
2. bspatch PS3UPDAT.PUP PS3CFW.PUP patchfile
3. Delete PS3UPDAT.PUP
4. Rename PS3CFW.PUP to PS3UPDAT.PUP and that's it! You're ready to install
5. Install lvl2.pkg
6. Launch backups with manager