diff --git a/README.OSX b/README.OSX index ceb1a4e83..2bea870f4 100644 --- a/README.OSX +++ b/README.OSX @@ -23,6 +23,12 @@ If you're using Homebrew, no custom flags are necessary. See README for the generic building instructions. -If you use an FTDI-based adapter and have the FTDI kext installed, you -will need to unload it prior to using OpenOCD: +If you're using a USB adapter and have a driver kext matched to it, +you will need to unload it prior to running OpenOCD. E.g. with Apple +driver (OS X 10.9 or later) for FTDI run: + sudo kextunload -b com.apple.driver.AppleUSBFTDI +for FTDI vendor driver use: sudo kextunload FTDIUSBSerialDriver.kext + +To learn more on the topic please refer to the official libusb FAQ: +https://github.com/libusb/libusb/wiki/FAQ