SD Card contents
Check the Tx documentation from the manufacturer to determine which microSD card to use. To use the microSD card insert it into the card slot.
- Format: FAT12/16/32
The micro sd card contents depending on your radio type, the sound files, lua scripts, themes and model images. Since sound files and lua scripts need to matched to a OpenTX version, OpenTX checks the version of the SD card contents and warns if the sd card files have the wrong version.

If a microSD Card is present when the Tx is turned on OpenTX check its root/top level folder for a file to determine if the correct sound pack version is being used.
- opentx.sdcard.version
If the incorrect version is being used then it is possible that some announcements such as telemetry units will be incorrect and other file such as lua scripts are outdated.
The standard SD card contents are available from within Companion.
- File > Download
- Click on Download SD contents
- The zip file available for download depends on the Companion radio profile being used.
- Click on the zip file link to download the microSD card contents
- Extract the ZIP file to the root/top level folder of the microSD Card.
This is where you place the images that you want to use as model logos. Filenames must be 10 chars long or less (not including extension). A collection of files is available here. Placing the cursor over a valid file in this folder will show it on the right side of the screen, and in the contextual menu you will find an entry to assign the selected image to the current model.
- Taranis: 64x32, 4-bit grayscale .bmp. See