X20/X20S and Ethos v1.5.0 User Manual
The X20 series requires an SD card that is 32gig or less formatted fat32. SanDisk Ultra
Micro SDHC Class 10 16gig cards are a good option. Files will be on the FRSky website.
The X20 Pro uses an internal eMMC card for file storage by default, but an external SD card
may be added. Tap on the ‘Radio’ tab to explore the eMMC card memory.
The system will create some of the folders if the user does not create them, like Logs,
Models and Screenshots. The Firmware folder was created manually to keep device
firmware like receivers, etc.
SD Card drive path when connected to a PC:
SD Card (drive letter)/ or
RADIO (drive letter)/ {internal eMMC card on the X20 Pro}
The top level folders are:
audio/
This folder is for audio files.
audio/en/gb English voice
audio/en/us American voice
This folder is for user sound files, which can be played by the 'Play audio' special
function. Refer to the Model / Special Functions section. The format should be 16kHz
or 32kHz PCM linear 16 bits or alaw (EU) 8 bits or mulaw (US) 8bits.
audio/en/gb/system
audio/en/us/system
This folder is for system sound files, e.g.
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