Write this number down. The new firmware you seek should be either identical (for reinstallation to fix corruption) or a higher sub-version (e.g., V1.2.4 or V1.3.0).
Plug the USB into the head unit's USB slot while the unit is OFF . Trigger Update: alpha coustic mp-1769 firmware download
, who are known to handle Alpha Coustic repairs and software updates in the region. XYAUTO Platform Write this number down