OpenGD77

Could the problem be related to the version of my CPU which would be version 2.09?

VK3KYY wrote: ↑

Fri Sep 16, 2022 9:34 pm

The bootloader in the radio is not a Com port device, it is a STM DFU device

You need the STM DFU driver installed on your PC. The official firmware firmware installer installs this driver.

The STM DFU driver WAS installed when I have tried to upload firmware in the radio.

The cable for the RT90 is just a mini USB cable, nothing special about it. Are you putting the radio into firmware update mode? This is where most people go wrong. Completely remove power from radio (disconnect or turn off the power supply, just turning the radio off is not enough) Hold down Orange...

The STM DFU driver WAS installed when I have tried to upload firmware in the radio.

Hello, I have a Retevis RT-90 radio, I downloaded the openmd9600 firmware and software as well as the bootloader. I did the installation as requested, but I am unable to transfer the firmware to my RT-90. To upload my firmware, I use my USB programming cable provided by Retevis. Is there anything wr...