1. Get the "WDV4K.BRN" file after decompressing the software package on the computer.

2.Copy the "WDV4K.BRN" file to the memory card (the memory card needs to be formatted in advance).

3.When the machine is turned off, insert the memory card with the "WDV4K.BRN" file copied into the machine, press the power button, the machine will automatically upgrade, and the blue light and green light will flash at the same time during the upgrade process.

4.After the upgrade is completed, the machine will automatically shut down, and it can be used again after it is turned on.