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This method is for cases where the first method doesn't work, or for newer versions of Windows 10 where the "Atheros AR7010" option may be hidden from the list. It was shared by a user named Delka and works by using a different installation file, athuw8.inf .

: It is only supported for connecting 2010–2012 Sony internet video devices to a wireless network. Potential Unofficial Workarounds Drivers and Software updates for UWA-BR100 | Sony USA

I can guide you to the exact compatible chipset files based on those details. Share public link

The device was a ghost. Released in 2012 for the PS3 and old VAIO laptops, the UWA-BR100 had a single-band 2.4 GHz chipset that was already ancient when Obama was president. Sony had officially killed its driver support in 2018.

: The device often uses the Hardware ID USB\VID_0411&PID_017F . If the adapter is not recognized, you can manually search for drivers using this ID in the Windows Update Catalog or through driver utility tools like Solvusoft’s DriverDoc . Manual Installation Steps (Unofficial)

Use a generic Atheros AR7010 driver or a compatible "Actiontec Wireless" driver.

Select from the device category list and click Next . Click the Have Disk... button in the bottom right corner.

Using third-party drivers carries security and stability risks. Always scan downloaded files for malware and back up your system before installation. Sony UWA-BR100 Drivers Download - Solvusoft

Click Install anyway if prompted.

Find or Network adapters . The adapter may appear as "Unknown Device" or "Atheros AR9271". Right-click it and select Update driver . Choose Browse my computer for drivers .

Since these drivers typically come as a .zip folder without an installer, you’ll need to perform a via Device Manager:

A: While many users have successfully downloaded drivers from sites like qc-drivers.eu and rocketdrivers.com , it's always wise to exercise caution. Always run a security scan on any downloaded file before opening it. Websites that require you to download a separate "driver installer" program should generally be avoided. Stick to simply downloading the driver package itself.

There are a few methods to update the driver for your Sony USB Wireless LAN Adapter UWA-BR100 on Windows 10:

Try Windows Update