What does vehicle RST mean?

[LeAnna]

Vehicle RST refers to the reset button. When the system crashes, programs malfunction, or needs to be restored to factory settings, the reset button can be used to restore the factory settings and make the system operate normally. RST is usually not a button but a small hole where an item like a toothpick can be inserted to touch the switch, solving system issues other than hardware damage. The RST button is mostly located on the front panel of the navigation device. When the device is powered on, inserting a toothpick to press it and hearing an action sound, then restarting the navigation can restore the factory settings. A common scenario that triggers a reset is when a connection request arrives, but no process is listening on the destination port. For UDP, when a datagram reaches a destination port that is not in use, an ICMP port unreachable message is generated, while TCP uses a reset.