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About this download

This program will update Keyboard Receiver Firmware to version 1.81 and will have the following:

- Fix for issue of USB selective suspend.
- Fix the issue that Keyboard hands when a button is repeatedly pressed or press-hold for 6 seconds.

Available Downloads:
Keyboard Receiver Firmware Update version 1.81
File name: EP0000322548.exe
File size: 5.41 MB (5,681,152 bytes)

File Info

File Name

  • Keyboard Receiver Firmware Update version 1.81

File Version

  • 1.81

File Size

  • 5.41MB

Release Date

  • 2015-03-11

System Requirements

  • Windows 8 32bit
  • Windows 8 64bit



1. Download the file to a temporary or download directory (Please note this directory for reference later).
2. Go to the directory where the file was downloaded and double-click EP0000322548.exe.
3. Follow the instructions displayed in the installation wizard.
4. After installation is completed, please restart the computer

Please note:
1. You need to complete two steps; 1. Update and 2. Pairing, to apply this software.
2. Do not put PC into sleep Mode, Restart and shutdown before successfully doing both Update and Pairing procedures.

Steps to update firmware
1. Plug the AC adoptor to the tablet.
2. Run EP0000322548.exe.
3. Tap Update button. (Updating firmware... message is shown. Wait about 1 minute.)
4. After Update Success!!! message is shown, tap Pairing button.
5. Complete the pairing manually following the instruction of Pairing the Wireless Keyboard with Your VAIO Computer.
6. Tap Close button.
7. Reboot the system.

Verification Path
Check the property of the following device in device manager;

USB Composite Device (Location: Port_#0001.Hub_#0003) -> Properties -> Details tab -> Bus reported device description

Version check after installation
WUSB NL Dongle V1.81