06-26-2014 10:09 PM - edited 03-16-2019 11:14 PM
i know that push # power on and enter 123456789*0# in 7900 series.but 9971 not use this method .can you tell me how eraser firmware? thanks!
06-27-2014 12:03 AM
You can't. All you can do is reset the settings. (Settings -> Admin Settings -> Reset Settings)
GTG
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