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Click "Upgrade" and wait for the process to complete. Do not turn off the power. Reboot: The device will automatically restart. 3. Post-Upgrade Check

: Locate the brand name (e.g., Kyocera, Sceptre, or specialized hardware) on the device's label or the "About" section of its current menu. hktrt2843p639 firmware new

Acquire a reliable USB 2.0 flash drive with a capacity of . Click "Upgrade" and wait for the process to complete