c45 original cable log file problem

I have problems getting log file (not only the log i can't use it with none of the unlocking and firmware updating programs) for my c45 and I think the reason is that I'm using the original cable from Siemens.Anybody suggest something - maybe schematics for cable
etc.

10x

I can't upgrade my C45 too and I have the original cable too !!
Is it the reason really? If yes, what can we do?