User Guide

1
Z
Firmware update manual
Continued on the next page
e
Model covered
AI-303
Supported operating systems
Windows 7 (32/64-bit)
Windows 8 (32/64-bit)
Windows 8.1 (32/64-bit)
Windows 10 (32/64-bit)
Windows11
As of Feb, 2023
Checking the firmware version
1 Turn the unit on.
2 Press the remote control DISPLAY button for
three seconds.
3 The MQA indicator lights yellow while the
input indicators show the release number.
Release number COAX OPT LINE1 LINE2
1

2

3
 
4

5
 
6
 
7
  
8

9
 
10
 
Updating is not necessary if the version (release number) is the
most recent.
Update procedures
A USB cable is necessary to update the firmware. Use a commer-
cially-available cable.
ATTENTION
Cables designed only for charging cannot be used. Always use a
USB cable that supports data transmission.
NOTE
The screens used in these instructions are from Windows10.
1 Uncompress the downloaded le.
The following files will appear.
o Win_DFU_driver.exe
o AI-303_updater_xxxx_yy.exe (xxxx is the firmware version, yy
is the release number)
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.