Read Harman Kardon SB 26 Service Manual online
4‐1
Software Upgrade
1、 Put HK_SB26.HUI to root directory at USB stick
2、 Power on SB26 and then insert USB
3、 If device detect upgrade file, the amber light will blink of power with 50% duty
cycle. Otherwise, it will blink white and amber alternately with 50% duty for 6s.
4、 Press RC_SURROUND， the light of power will become white, and the white light
of surround and the Bluetooth will blink with 50% duty.
5、 After upgrade successfully, the DUT will reboot automatically.
Please notice：
1、 The DUT only support FAT/FAT32 format file system
2、 If the DUT can't detect upgrade file, please check the file and re‐insert several
times.
3、 All of error while upgrading， the DUT will blink white and amber light of power
with 50% duty for 6 second.
2、 Power on SB26 and then insert USB
3、 If device detect upgrade file, the amber light will blink of power with 50% duty
cycle. Otherwise, it will blink white and amber alternately with 50% duty for 6s.
4、 Press RC_SURROUND， the light of power will become white, and the white light
of surround and the Bluetooth will blink with 50% duty.
5、 After upgrade successfully, the DUT will reboot automatically.
Please notice：
1、 The DUT only support FAT/FAT32 format file system
2、 If the DUT can't detect upgrade file, please check the file and re‐insert several
times.
3、 All of error while upgrading， the DUT will blink white and amber light of power
with 50% duty for 6 second.
Harman Kardon
SB 26 Service Manual
Page 5 of 44
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