I'm not into this things for 5 months I forgot all the things can u help me plz?
download the firmware 4.82 Rebug (if you use rebug firmware and check if you have dex or cex ps3) if you got dex ps3 download the D-rex editon of 4.82 if not the Rex Editon
after download put the file into your usb drive which must be Fat32 formated and rename the file into: "PS3UPDAT.PUP"
the file must be in: /usb/PS3/UPDATE/"Your File"
put your Usb-Drive on your Ps3 Slot (the right side) and go to system update with external drive
edit: hope you understand this. if not, you can send me a message (start a conversation)