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X4 | SERVICE MANUAL
6) Insert the Mac Address number, this may be found on the DIGI Board: Note: all serial numbers comprise 8 digits and
quotation marks, for example: “12345678”
7) Click on “save”
Warning: the first 6 digits of the Mac address (highlighted in red) should never be changed!
8) Remove the USB key from the PC and plug it in the amp.
9) Turn the amplifier ON
10 As soon as the leftmost button (left to the USB port) lights up, press and hold the rightmost button. Wait 2.5 minutes,
once all the LEDs turn BLUE.
11) Check if the serial number is correct by connecting and discovering the unit to Armonìa
12) After that update the unit with new firmware