Hello people,
we verify that our board with the BG95-M3 is powered by 4.2V, and the 1.8V signal is ok.
We were able to update the firmware via boot, but when we connect it to the computer’s USB, this device appears.
![image](https://forums.quectel.com/uploads/default/original/2X/d/db0aa454fbbfe14f7df5b40444fdb720fec76b08.jpeg)
We were unable to send AT commands to the module, either via USB or Uart. Has anyone had this same problem?
WizIO
2
Connect VDD_EXT to BOOT_PIN…
Hi WizIO! Thanks for the tip!
We made this connection, updated the firmware, but nothing has changed.
We did a deeper search, read all the forum topics, and confirmed with the manual, the problem was the GNSS TX:
We removed this circuit and the module started normally!
Thanks again for your time WizIO!
WizIO
4
Connect VDD_EXT & BOOT pins,
Power ON
The Windows PC will install USB boot driver
Use this USB-UART and update firmware