I have a F25 X3 to which I am trying to connect it to ISTA for diagnostics. The ENET cable I know works because it connects to E-SYS just fine for coding.
I (@Node) made a small utility suite which allows manual control of voltages which Ediabas sees from the interface such as OBD or CAN. It also includes additional ISTA+ support so it should work with ISTA as well.
I have solved an ISTA-P problem that happen in case of improper shutdown of windows 7 32bit, ISTA-P version 3.61.5.000.
09.2017 BMW ISTA software free download: tested 100% & works perfect