ONYX (serv.man5) - Harman Kardon Audio Service Manual (repair manual). Page 3

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Harman ONYX Upgrade Manual 
1.
Upgrade by 
USB flash disk 
(1)Put the Upgrade Firmware (HK_ONYX.bin) into the USB flash disk (Root 
directory). 
(2)
Power on the DUT.
 
(3)Plug in 
USB flash disk to DUT.
 
(4)3s keep long press 
Wifi
 Button a
nd BT Button simultaneously.
 
(5)
Then DUT enter Upgrade Mode, people cannot do any operation until the DUT 
finished upgrade operation.
 
(6)
Until the DUT playing Prompt tone, the DUT finished upgrade operation and power 
on.
 
Note:If just upgrade Mcu FW, It need about 30s , If upgrade bt , need about 3 minute , 
If upgrade wifi module , It will take about 30 minutes; 
 
2.Upgrade by Webpage 
(1)Power on the DUT and connect to an AP and get the IP address of DUT. 
1)Power on the DUT 
2)Long press Wifi Button until it quick flash 
3)Connect the DUT Wifi Hotspot called “HK_Onyxxxxxxx” 
4)Input the IP=’192.168.1.12’ in the browser on the computer 
5)Select an Route in “Device Wireless SSID” ,then the DUT connect the Route 
 
 
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ONYX Service Manual
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