Reply to Upgrade Prob with the kit?

Hi,
After receiving the upgrade kit alongside the knobs, etc. I have tried to upgrade with both serial and USB cables (bought two different pairs of each) but to no avail.. just to be able to eliminate where the glitch occurs, not only I have used different sets of cables but tried them also on 4 different PCs with all the methods mentioned in the community s, please check my posts. Now I know that it is not a cable or computer problem which only leaves us with the kit.
I am merely suggesting that as I have come to the very end of my wits alongside few of my comp-geek friends who have been kindly trying to help me on this. Once again, it might not be that but that seems to be the only option I have left in order to be able to upgrade. Would it be possible to send me a new one? I have tried contacting DJTT via moderators and through Ean but so far I haven't received any replies..could someone at least point me at the right direction?
Thanks.

Kind regards.