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1. longpress ( > 5s) Vol+
2. press Vol-
3. press Vol+
4. press Vol-
5. press Vol+
6. press Vol-
7. press SpeedDial Key 1 [BS1]
8. press SpeedDial Key 2 [BS2]
9. press SpeedDial key 1 [BS1]
10. if completed you will notice a short confirmation sound and the device will reboot, if not managed ( e.g. by provisioning) it will come up on factory default state as desired.

Image Added

HD350W & HD351W

1. Dial: * 9 9 0 0 0 0 #
2. if completed you will notice a short confirmation sound and the device will reboot, if not managed ( e.g. by provisioning) it will come up on factory default state as desired.

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