VoxAlti uses Wi-Fi to carry out updates. The FDS Altis app (available on iOS or Android) needs to be used first to set the Wi-Fi network name and password on the altimeter. After settings those, use the .bin file at the bottom of this page and follow the instructions in the instructional video found here:


Firmware Version 2.4 (June 24, 2026)
New voice.
VoxAlti_Firmware_2_4.bin