The hardware is incompatible.
Method 1: Most car DVD navigator devices have a reset button on the panel. Some have a small hole (sometimes a button). Usually there is RESET next to it. Poke it in with a toothpick and press In a few seconds, the machine will shut down and restart.
Method 2: For some machines, click Settings in the main interface. There is an option to restore factory settings. In fact, the operation is similar to that of a mobile phone. Then pair and connect again.
Bluetooth (?Bluetooth?): is a wireless technology standard that enables short-distance data exchange between fixed devices, mobile devices and building personal area networks (using the 2.4-2.485GHz ISM band UHF radio waves). Bluetooth technology was originally created by telecommunications giant Ericsson in 1994 as an alternative to RS232 data lines. Bluetooth can connect multiple devices, overcoming the problem of data synchronization.
Today Bluetooth is managed by the Bluetooth Special Interest Group (SIG). The Bluetooth Technology Alliance has more than 25,000 member companies around the world, which are distributed in multiple fields such as telecommunications, computers, networks, and consumer electronics. The IEEE listed Bluetooth technology as IEEE 802.15.1, but this standard is no longer maintained. The Bluetooth SIG oversees the development of Bluetooth specifications, manages certification programs, and protects trademark rights. A manufacturer's device must comply with Bluetooth SIG standards before it can be marketed as a "Bluetooth device." Bluetooth technology has a proprietary network that is distributed to devices that comply with the standard.
The word "Bluetooth" is an Anglicized version of the Scandinavian Bl?tand / Bl?tann (Old Norse blát?nn), which is ten years old. The nickname of Harald Bluetooth, a king in the 19th century who unified the conflicting Danish tribes into a kingdom. According to legend, he also introduced Christianity. The idea to name Bluetooth after this was first proposed in 1997 by Jim Kardach, who developed a system that allowed mobile phones to communicate with computers. His inspiration came from The Long Ships, a historical novel about the Vikings and King Harald Bluetooth, written by Frans G. Bengtsson?, which he was reading at the time, which meant that Bluetooth would also unify communication protocols into a global standard.