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i dont know what the current firmware is nor do i know where to look... anyone please.... i think i want the CFW 4.75 FERROX V1.00 ??? anybody please help?

Just download Ferrox 4.75 or Habib 4.75.
Rename the file to PS3UPDAT.PUP and then do this.

PS3(folder)/UPDATE(folder)/PS3UPDAT.PUP(file)
Make sure your USB is formatted to FAT32
Also make sure you don't have any disc in your console while updating.