ps3 stuck on update loop

Hi, I have a ps3 chech 2101a that is stuck on a update loop I know from the owner that it originally had rebug 4.85 but he did the miskate of connecting to psn and updating the console. The BD drive aparently is working because it accept the disk and the blue light does turn on. Is there anyway to fix the update loop? or it was cause for install OFW on top of CFW?
thanks for the assistance