Firmware Version 2.0 (April 30, 2024)
SERVICE BULLETIN UPDATE Improves the longevity and dependability of the altimeter.
SonoAlti_3V_Firmware_2_0.uf2

Flash Revealer: SonoAlti_3V_16MB_Flash_Revealer.uf2
Flash Eraser: SonoAlti_3V_Flash_Eraser.uf2
SonoAlti 3V Sounds: SonoAlti_3V_Sounds.zip