Harman Kardon HK 3700, Service Manual

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[HK3700 Firmware Upgrade Instructions]
1. Copy the latest firmware files(*.fw and *.ve) to a USB stick's root directory.
2. Plug a USB stick into the front panel.
3. Power ON by using the remote control or the set button.
4. After 30 seconds, press 'STEREO' key and 1,7,1,8 + 'ok' buttons on R/C.
Followings will be shown on the VFD.
VFD 1st line : SYSTEM UPGRADE
VFD 2nd line : Searching..
5. After USB searching, Venice upgrade begins.
Followings will be shown on the VFD.
VFD 1st line : VENICE UPDATE
VFD 2nd line : [Updating %]
It takes about 6~8 minutes to upgrade the firmware.
Harman Kardon HK 3770 Service Manual
Page 16 of 120