Update Procedures

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Firmware update manual
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Models covered
UD-505, NT-505
Supported operating systems
Windows 7 (32/64-bit)
Windows 8 (32/64-bit)
Windows 8.1 (32/64-bit)
Windows 10 (32/64-bit)
As of March, 2018
NOTE
In this manual, we refer to both the UD-505 and the NT-505 as “the
unit”.
Checking the firmware version
1 Turn the unit on.
2 Press the MENU button to open the menu
screen.
3 Turn the input selection (INPUT or SOURCE)
knob to show the firmware version (Version
info).
Display example
MENU
Version info
SYSTEM 1.01
The number shown to the right of “SYSTEM” is the firmware
version.
Update procedures
A micro-USB cable is necessary to update the firmware. Use a com-
mercially-available cable.
Set the unit’s POWER switch to OFF, and follow the procedures
below. Do not connect the unit to the computer until instructed to
do so.
NOTE
The screens used in these instructions are from Windows 7.
1 Uncompress the downloaded le.
The following files will appear.
o Win_DFU_driver.exe
o NTUD505_updater_xxxx.exe (“xxxx” is the firmware version.)
2 Double-click Win_DFU_driver.exe, and press
the Enter key.
NOTE
If a “User Account Control” pop-up message appears during
installation, click “Yes”.
3 When the Device Driver Installation Wizard
appears, click “Next”.
Microsoft and Windows are either registered trademarks or trade-
marks of Microsoft Corporation in the United States and/or other
countries.
Other company names and product names in this document are
the trademarks or registered trademarks of their respective owners.