sdmotorsport

Hello, I want to ask if I can update my mulf2high with K+Dcan cable because I have problem with skipping tracks from usb. Lets say from 50 tracks it only plays 10. Tried with many usb drives formatted different ways but always in fat32 and same thing. Tried same usb stick on another e60 with cic and combox and plays all of the songs. So should I risk updating the mulf2 with K+Dcan cable and since I don't have powerfull battery charger, can I start the car and let it idle for the update? Thank you.