In the hopes it will help someone else, resolving?
¡°Failed to communicate with radio: Radio is not responding¡±
on my Mac running El Capitan came down to finding out that I had installed FTDI drivers on a previous version of Mac OS X (10.8 or earlier) and those drivers (v2.2.18) are not the proper drivers for 10.9 Mavericks, 10.10 Yosemite, or 10.11 El Capitan.
You can tell which driver you have through a Terminal window (emphasis mine)
$ kextstat | fgrep -i ftdi
??161? ? 0 0xffffff7f83001000 0x8000 ? ? 0x8000 ? ? com.FTDI.driver.FTDIUSBSerialDriver (2.2.18) 638ECCC3-375D-CD1A-C2EC-0DC14740FC9C <121 40 5 4 3 1>
?
The Apple driver I see with 10.11.3 is com.apple.driver.AppleUSBFTDI (5.0.0)?
The FTDI-supplied driver is v2.3, according to?
At least for me, the Apple driver is working with my Valley Enterprises cable.
One can disable the older FTDI driver:
$ pushd /System/Library/Extensions/FTDIUSBSerialDriver.kext/Contents/MacOS
$ sudo mv FTDIUSBSerialDriver FTDIUSBSerialDriver.disabled
or permanently remove them with:
$ sudo rm -rf /System/Library/Extensions/FTDIUSBSerialDriver.kext
(Note: This is a different path than where the 10.9 and later drivers are installed, according to?)
?
If you haven't used
sudo before, you may get a message warning something about how dangerous the powers you are about to unleash are. Yes, they are, so type carefully! You'll be asked for your password. Since you are expecting to have to give it and you know why you're being asked for it, you can give it your login password.
