I remove the 1: 140.bin, and it still has the same features as when I updated with the 140.bin.. does this update the files on the unit or the firmware? is it also possible to copy my backup of all the system files back to the unit to put it back to original state?

I tested my cable in another 2555 unit and the is working in that unit, but not mine. now can I copy everything from my friends unit to mine to fix this?