Why is my firmware update failing on the Nextbase 122HD?
The update will fail if the firmware bin file has been renamed in any way, for example if it appears as 'FW122HDA(1).bin' instead of 'FW122HDA.bin'. You must ensure the file name remains exactly as downloaded before copying it to the SD card. (Page 4)
From the official Nextbase 122hd Dash Cams manual, page 4
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