To update your Astral-TX firmware:
1. Insert a micro SD card in the Astral-TX. Micro SD card is not included.
2. Format the micro SD card. See Settings > System > Format.
3. Connect the Astral-TX to the computer for file transfer using a USB-C cable.
4. Download the Astral-TX firmware PRG file from:
https://www.sounddevices.com/download/?prod=Astral-TX
5. Copy the PRG file to the root of the Astral-TX micro SD card
6. Eject the Astral-TX from the computer.