Never power down the device during an update, as this can lead to "bricking."
: Firmware updates often factory reset the device. Back up any essential apps or local files. nortekhdboxr1hdmifirmware exclusive
Most critically, If the firmware has a bug (e.g., HDMI-CEC not waking the TV), the user cannot flash a generic stock ROM because the HDMI timing tables are unique to that batch. Never power down the device during an update,
Providing the brand name and the device's actual model number would help in finding the correct support page. Hello world! - Art by Joyce Wright HDMI-CEC not waking the TV)