OSD Font Upload Problem
Description
Betaflight-configurator font upload function via USB doesn't seem to work on some flight controllers.
No matter how many times you upload the font, the OSD still display the default font.
Resolution
You need the battery to be plugged in so the function works properly (PROPS REMOVED!). Plug the battery in FIRST, then connect to USB.
Most probable Cause
Some flight controller designed don't power the OSD chip properly (or at all) when connected only to USB. The OSD font is stored inside the OSD chip so it must be powered and communicating with the rest of the flight controller so that the font can be updated.
Concerned Board
The following board/FC are known to have font upload problem
| Board Name | Target | OSD chip | Lipo in fix issue ? | Product URL |
|---|---|---|---|---|
| DAL RC F405 AIO | DALRCF405 | N/A | yes | dalrc |
| DAL RC F722Dual | DALRCF722DUAL | N/A | yes | |
| Speedy Bee F7 AIO | SPEEDYBEEF7 | N/A | yes | Speedy Bee F7 |
| Diatone Mamba F405 Mini FC | FURYF4OSD | N/A | yes | diatone |