Please check the followings:
- If the original CD/headunit is turned on.
- If the LVDS cable is plugged into android screen correctly.
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- If your car has optic fiber(Ignore if no optic fiber), need to relocate it to android harnes Click for details
- Goto " setting-factory settings-car display", password: 2018, please choose Cartype one by one according to the original radio system such as CCC, CIC, NBT, EVO, not car models until OEM radio display correct. Click for details