How long does a firmware update take on the Nextbase 122HD, and are there any warnings during the process?
The firmware update takes approximately 1 minute to complete. During this time, the screen displays 'Firmware Updating... Update takes approx 1 minute — Do not disconnect power!' as a warning not to interrupt the process. (Page 5)
From the official Nextbase 122hd Dash Cams manual, page 5
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