EP-06-E wont work after "successful" firmware upgrade

Technical Subjects Upgrade/Debug
6

I solved it.

  1. Put tape over pin 23+25 and 31+33 to block usb3 pins.
  2. Replaced kerneldriver qcserial with the option driver
  3. Connected to the modem and sent the at-command to disable usb3 (AT+QUSBCFG=“SS”,0)
  4. Removed tape from card.
  5. …
  6. Profit

It would seem that the old firmware I was running didn’t use usb3.

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