dead skybox f5s, dim led faint number 8, help

hi
i am new to this so please be patient, i have 2 sky f5s boxes, one of them is dead, there is a dim red led and a faint number 8.
Can anyone give me an idiots guide on how to rescue the box, reading around it needs the firmware installing, but by doing this i am guessing the gift that came with the box will go as well, is this correct. i would be grateful if someone could help me please