PS3 4.46 DOWNGRADE TO 3.55
Updated to 4.46OFW!
Today i bring you a tool made by ROGERO that can downgrade any OFW ps3 to 3.55cfw, using a unique method of opening a mp3 file on your ps3. You need to download the files below and do as the video explains.
1: Download the files that you need.
2: Copy "lvl1.mp3" and "lvl2diag.PSS" in a folder called LVLDIAG inside your USB Flash Drive."USB Flash Drive/PS3/LVLDIAG"
3: Copy the PS3 FIRMWARE that you have downloaded at "USB Flash Drive/PS3/UPDATE"
5. Disconnect from the internet.
4: Put the flash drive on the second USB port of your PS3, go to music click display all and play the lvl1.mp3 file.
5: Wait about 10-15 mins for file to restore PS3 Bios to 3.55 and done! :)