How to Update Xiegu G1M Firmware?
First of all, make sure you've got the latest firmware from Radioddity/Xiegu.
CLICK HERE to download
It is possible that the firmware needs to be reloaded. This is most often seen when the radio is connected to a computer and turned on. I am including the firmware file
Open the link below, download and install the Teraterm terminal program v4.96
Plug the USB Cable into the computer and open Device Manager. Click on the Com port, observe port number and set Port speed to 19200 BPS
Leave radio turned off
Choose Setup, then Serial port
Verify com port number and confirm port speed is 115200 BPS
Hold the Space Bar and turn the radio on
Choose 1 to Update FW
Old FW is erased
When the FW is erased, You will be prompted for the new FW file
Choose File, Transfer, Send
Highlight the FW file, and put a checkmark in the Option for 1K. It will not load properly if this is not checked
Firmware transfer is started
On completion, you will be prompted to reboot your rig
Turn Radio off
REMOVE POWER CORD FROM RADIO AND COUNT TO 10
PLUG POWER CORD BACK IN
Turn on the Radio and the operation should be restored.