OpenGD77

Hello,

I am new using OpenGD77. My radio is a Radioddity GD77. I have downloaded and installed the OpenGD77CPSInstaller_R2023.11.26.02 version of CPS. When I use this version of CPS and try to read or write from the radio, I always get the same message SELECT OpenGD77 com port and although a drop-down menu appears, the program does not have any port identified to select. I do not know what is the problem. Anybody knows what could be the problem? .

Thank you.

Fernando, EC3A.

Have you loaded the OpenGD77 firmware into the radio from the extras/firmware loader menu as detailed in the instructions?
The Com port will not appear until this has been done. The CPS cannot be used with the original manufacturers firmware.
Loading the firmware does not use the com port.

Thank you for your answer.

At this moment in my radio the firmware installed is GD-77_V4.3.9.sgl that I have downloaded and installes few day ago from the last version of software available in the Radioddity WEB page https://www.radioddity.com/pages/radioddity-download.

I read in the OpenGD77 firmware installation document that the firmware file versión that I sould use is GD-77_V4.3.6.sgl file .

I have two questions:

1.- Will the extras/firmware loader work correctly with version 4.3.9? . I have read in the same document that "Firmware loader can merge the OpenGD77 firmware with the codec from the official firmware" and I dont know if it will work also with this last version ( is not the 4.3.6 ) .

2.- Once the firmware is installed and merged with the OpenGD77 "extras/firmware loader", will I be able to go back to the original firmware or the original factory state of the radio? .

Thank you in advance for your support.

Fernando, EC3A.

It does not matter what firmware is loaded to your radio. The merge is done in the CPS before it is downloaded and this only works with the stated firmware version. You never need to load that version into your radio, it is only needed by the CPS.

If you follow the installation procedures completely, Including making a flash backup, you should be able to return to the original firmware. People have done this before. However this is not guaranteed, it is one of the small risks you take when loading unofficial firmware. It is up to you if you want to take that risk.

Download the GD-77 donor software and extract and select the GD-77_V4.3.6.sgl file in the OpenGD77 GD77 Firmware Loader.
When the donor software is verified use "Select a File & Update together with the OpenGD77 Firmware.

Hi SA0BUX and G4EML,

thank for anwers.

I wish a happy new year to both of you and your families.

Fernando, EC3A.