How to change firmware to OPENGD77 on Radioddity GD-77How to change firmware to OPENGD77 on Radioddity GD-77

Warning

Changing firmware is on your own risk.

Loading Firmware OpenGD77 for Radioddity GD-77. Before doing anything, back up the radio. The firmware currently works with Radioddity GD-77, GD-77S and Beofeng RD-5R. With DM-1801 and RD-5R.

The software can be downloaded here https://github.com/rogerclarkmelbourne/OpenGD77CPS/releases/tag/R2020.10.14 or HERE.

To load the same firmware without installing the programming program - HERE

The menu looks like this:


The radio must be switched on in download mode.

For DM-1801 and GD-77 / s you need to do the following:

  • You turn off the radio.
  • Connect the radio to the computer.
  • Press the two buttons below the PTT button called S1 and Fn at the same time.
  • While holding down both buttons, turn on the radio.

PTT-layout.png

The LED is green, the screen is off.
That`s it. Then open the OpenGD77 CPS software and go to the Extras-> Firmware Loader menu

OpenGD77 CPS

A window will load asking you which radio station to download the Firmware for.

Select the radio station type and click Download & Update. If you have the firmware as a separate file, you can select Select a File & Update.

Firmware Loader OpenGD77 CPS

 

Then another window appears, allowing you to download the approved versions of the Firmware. We recommend that you select the Stable version.

OpenGD77 CPS Firmware select

 

Click on the version you selected and click Download and Update. After the operation, you can safely turn off the radio and turn it on again. Ready. You already have OpenGD77.

The programmable buttons are now predefined. Here are pictures for Radioddity: