If you get “SD Card Warning” on OpenTX radio (Taranis, Jumper T16, TX16S etc), here is a quick fix. This is usually caused by outdated file content on the SD card after updating firmware.
To enable sound packs, LUA scripts and other features, you have to have the correct files in the SD card. If the files don’t match the current version of the OpenTX firmware, you will get an “SD card warning” error message on startup when you turn on the radio.
There are two ways to fix this problem.
Update SD Card Contents
If you want to format your SD card, make sure to do it in FAT format (not FAT32)
I recommend updating SD card content to the exact version of your OpenTX firmware for full compatibility.
- Backup existing files on your SD card in the radio
- Download SD card contents from here: https://www.open-tx.org/downloads
- Completely erase files on the SD card
- Unzip and copy the files to SD card
- If you have custom files such as sound pack and telemetry scripts previously, you can simply copy them from the backup and paste them in the SD Card (just overwrite)
That’s it! The Warning should disappear the next time you power on the radio.
Changing Version Number
If you don’t want to update SD card contents for some reason, here is a work around.
However this is considered a “dirty” method as it’s quick but full compatibility is not guaranteed, therefore use this at your own risk.
- Access SD card (either by entering bootloader mode, or pulling it out of the radio and insert into computer)
- On the root directory, you should find a file called opentx.sdcard.version
- Open it with a text editor, it should contain the current SD card content version numbers
- Change the version number to your OpenTX version
- Save and put SD card back in radio
And that’s it!