@Franz99 Try connect it to a pc and see if you can find it in the deivce manager as a RNDIS network adapter. In case of the mifi in off charge mode, you can open a cmd and input “ipconfig” to see if...

@Fadaei 1. Are you using the original wire？if not ，try it out 2. Try other usb ports on your pc, and if possible, try another pc, “flash write failure” may be due to unstable power supply and send...