OpenGD77

I seem to have encountered the same situation, is there any follow-up progress on this problem, thanks

I noticed that the volume adjustment signal for this radio is sent to the mcu, which controls the volume. Therefore, the official firmware can display the current volume on the screen.
It would be great if we could also have the volume displayed on the screen.

Thank you for your work on the opengd77 firmware. I have just purchased a Retevis RT3S，and hope can learn more here.
73!