I tried to update CCA060 with a 50A power supply adjusted to 14.5V. The voltage never drops when I use this, but for some reason the ECU stops responding if the fuel pump starts while programming. (voltage still above 14v).
How many times should it go to 100% during the programming? I have gotten to the point where idrive boots completly a couple of times, then it go back to the BMW screen and start over again from 0%.
Have anyone else experienced the problem when the fuel pump starts?