No update is perfect, and v3.06 has a few blemishes.
: If you experience issues with Bluetooth calls, the fix is not to reinstall the ROM but to adjust the MCU's Bluetooth settings. Go to Settings -> Factory Settings , enter the code 126 , navigate to the Application tab, and change the BT option from "IVT_BT" to "WQ_BC6". This is a known MCU-level tweak that resolves the problem on many KLD6 units. Mtcc-kld6-v3.06 Update
Faster switching to the rear camera view. No update is perfect, and v3
: Fixes deep sleep cycling states that cause the head unit to draw power while the car ignition is off. No update is perfect