I have updated my Profilux 3 firmware to 6.46. It stopped while in progress and now I have nothing working. I have read the ProfiLux 3 & 3.1 Emergency Update Instructions, but I was wondering if you absolutely need a RS232 cable in order to work? I have tried with a USB without any success. I have ordered a cable RS232 to USB and waiting for it.

I was wondering if there is any other way and if not should it work once I received the cable?