The AfaTech IT9135 BDA Device driver allows Windows to communicate with compatible IT9135-based digital TV tuner hardware. It provides the Broadcast Driver Architecture (BDA) interface that supported TV applications use to detect the tuner and receive broadcast signals. Despite sometimes appearing under GPU listings, this device is associated with TV reception rather than graphics rendering.

Key Features

• TV tuner recognition: Helps Windows identify compatible AfaTech IT9135 hardware and make it available to supported television-viewing software.
• BDA application support: Provides a standard interface for compatible programs to access the tuner, scan for channels, and manage TV reception.
• Driver recovery: Installing the correct package can resolve missing-driver warnings or restore device detection after a Windows reinstall.
• Windows version matching: When downloading for Windows 11, 10, 8, or 7, choose a package that explicitly supports your system version and architecture. Compatibility can vary between tuner revisions and driver releases.

How to Install

1. Confirm your hardware and Windows version. Open Device Manager and locate the tuner, which may appear as an unknown device if its driver is missing. Check its hardware IDs under Properties > Details, then confirm whether your Windows installation is 32-bit or 64-bit.

1. Download a matching driver. Select an AfaTech IT9135 BDA Device driver package that matches both the hardware IDs and your operating system. Do not assume that an older Windows driver will work on Windows 11.

1. Extract and install the package. If the download is compressed, extract it first. Run the included installer, or use Device Manager > Update driver > Browse my computer for drivers and select the extracted folder.

1. Restart if prompted. After installation, check Device Manager for warning icons. If Windows rejects the package as incompatible or unsigned, obtain a supported driver instead of disabling security protections.

1. Test reception in a compatible TV application. Connect an appropriate antenna, select the tuner, and scan for available channels. Channel availability depends on local broadcasts, signal strength, and the tuner’s supported broadcast standard; the driver alone does not provide TV channels.

Common Issues and Fixes

• Install fails or rolls back: Run the IT9135 setup as administrator and use the correct 32/64-bit package. If Windows blocks the driver, temporarily disable driver signature enforcement, then reinstall. Close TV/PVR software first.
• Device not detected: Try a rear USB 2.0 port directly, not a hub. In Device Manager, scan for hardware changes and check for unknown/USB devices. Reconnect the tuner during driver installation so Windows binds the BDA driver.
• Version conflicts: Uninstall any existing AfaTech/IT9135 BDA driver, tick “Delete driver software,” reboot, then install one matching package. Avoid mixing Windows Update and vendor drivers.