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 1.9 (April 12, 2026)
Fixed glitch of "Approaching hard deck" notification not playing correctly.
VoxAlti_Firmware_1_9.bin