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When I followed those instructions it has steps to uninstall stm32flash and install the latest version. I did that and I can use the command line stm32flash /dev/ttyAMA0 to read the information about the stm32 on the zum board after I install the version 0.5. I'm sort of curious so after I got your ...

I was finally able to update the firmware. Following the process found at this link with a change at the end. https://github.com/juribeparada/MMDVM_man/blob/master/MMDVM-Pi_en.md I was using a Raspberry Pi 3 B+ with the latest version of Pi-Star installed. No matter what I tried I could not get the ...

I have a Zum Radio MMDVM for Pi board Rev 1.0. DMR was working but the Nextion display wouldn't connect. After loading screens and trying to reverse the TX/RX connection to the display I decided to try updating the firmware on the Zum Radio board. I followed the steps I found on a post here and on G...