Zadig is a small Windows utility that installs the generic WinUSB driver onto an
SDR dongle. Out of the box, Windows binds an RTL-SDR to its
TV-tuner (DVB-T) driver; Zadig replaces that with WinUSB so SDR software can talk to the
device directly.1
Zadig swaps the dongle's default Windows driver for WinUSB so SDR software can access it.
Overview
GopherTrunk’s Windows installer bundles Zadig to automate this step. On Linux and macOS
the equivalent access is handled by libusb/IOKit without a separate tool.
Sources
Zadig — the official Zadig site, the USB driver installer that swaps a dongle’s driver for WinUSB. ↩
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