Roborock E5 FCC - Manual (Page 27)

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Instructions for Use
System Reset
If the robot does not respond when you press a button or the
robot cannot be shut down, reset the system by pressing and
holding the button. The robot will restart automatically after
resetting.
Firmware Update
Charging Dock and ensure that the battery level is higher than
Restore Factory Settings
If the robot is not functioning after a system reset, press and hold
the button and the button together until the "Restoring
factory settings" voice alert sounds. The robot will then be
restored to factory settings. Ignore the "Resetting WiFi" voice alert.