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Note: this update is only workable for Android car radio with octa core CPU with 2GB RAM+16GB ROM,
please contact us to confirm update file before you update your Android car radio.

This Firmware fit for: JY-UM135N2PXC,JY-UM135N2PX5R,JY-UM135N2PX5,JY-VM131N2PX5C,JY-VM131N2PX5R,JY-UMS04N2PX5,JY-TM139N2PX5
Here is MCU update link:
Here is system update link for HD 1024*600 resolution:
Here is system update link for HD 800*480 resolution:

Before you update the head unit, please backup all important things:
1) Copy maps from car stereo internal storage to SD card.
2) Go to settings-factory settings-enter password 126-canbus setting to check canbus protocol and record it.
3) Use a good quality SD card or USB to update it (format the SD card or USB as FAT32)

After you finish the update, you are required to do the below things:
1)After you update, you need to connect WiFi to activate carplay function. Only left side USB port has carplay function.
if you want to use Android auto, please insatll android auto app from google play store, then connect android Phone via USB cable to left side USB port.
Connect Bluetooth, and android auto function can work.
2)If your car stereo is VW special model, front and parking sensor can work well after this update.

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