Firmware Version 1.0 (September 15, 2023)
Original firmware for SonoAlti 3V.
SonoAlti_3V_Firmware_1_0.uf2

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