How To Downgrade Ps3 Firmware 4.89 To 4.88 Direct

: Format a USB flash drive to FAT32 . Create a folder named PS3 , and inside it, create another folder named UPDATE .

Sony learned from the PSP hacking wars. On the PS3, they introduced a fuse system (or rather, a "minimum version" flag in the Syscon chip). Every time you update, a virtual fuse is blown. If your console’s internal minimum version is 4.89, you are stuck. You cannot go back to 4.88 because the hardware physically refuses to boot a lower firmware. how to downgrade ps3 firmware 4.89 to 4.88