User's Guide

MP280B User’s Guide

6. System reset and recovery

There are three ways to reset a module, and a third method can restore system

parameters:

1. Reset the module using the AT command;

2. Use the service channel interface to remotely reset the module with APP.

3. Use the hardware RESTORE pin (see the pin definition table). After powering up

for 30 seconds, the system parameters of the module will be restored to the user level

parameters (shallow recovery, reset immediately after releasing this pin), if the system

continues to pull down for 20 seconds, all system parameters of the module will be

restored to the factory settings (depth recovery) and reset immediately. This pin has an

internal pull-up and will not enter this mode by default.