1, Restore the factory settings of the Automotive Head Unit

2, Try to upgrade the latest version of firmware

https://www.carlinkit.com/download.html

3, Observe the status of the TBox signal light: after connecting the USB port, within 30 seconds, if the signal light is no longer on, then you need to use a two-part cable to increase the power supply.
 

① USB Female to CarlinKit product

② USB Male to car cigarette lighter/charging

③ USB Male to car data port（USB/Type-C are both possible, Depending on the data cable you purchase）