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× Questions about UC300/UC500 IP Phone System

UC300 - update firmware to 4.1.0

4 years 3 months ago #14768 by pavel_s
Hi, experts!
When you try to update the firmware from 3.3.0 to 4.1.0, a warning occurs. Do I understand correctly: if you continue to this update, a) the configuration will be reset to the default, and b) it will be impossible to return the old firmware. If during this update the configuration is reset to default, is it possible to restore it from the backup made in firmware 3.3.0?
Thanks You!
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