Hi Mate,
Just a few more questions for you to answer,
1) Has the printer been working in the past
2) What firmware are you currently trying to upload (Marlin, repetier)
3) Is the firmware uploading or are you getting an error message
4) What host software are you using, (pronterface repetier)
4) If the firmwear is uploading, what is the printer doing that is making it not work? Ie are the motors moving, do the end stops work