Cannot load driver in Mac OS 11, Big Sur

Discussion in 'Mac Ham Radio on macOS & iOS' started by W8BC, Dec 3, 2020.

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  1. W8BC

    W8BC XML Subscriber QRZ Page

    I am new to the forum, so forgive me if I am stumbling around. In order to get started with WSJX on my IC-705, I understand the first thing is to install the USB Driver on my Mac. I tried to install the Silicon Labs driver on my Mac which is using system OS 11. Could not get the system preferences (security and privacy) to allow the installation. Then I found this message on the Silicon Labs website saying their driver does not work with OS 11
    Do I have a problem or is this the state of thing at present?

  2. DL2RUM

    DL2RUM Ham Member QRZ Page

    No need to install a driver for the IC-705! Catalina and Big Sur have the required drivers built in. (Also for other Icoms, Yaesu may be different.)
    Unplug the trx, use the Uninstaller in the SiLabs driver package to remove it and reboot your Mac.
    N6YWU and K3DCW like this.
  3. W8BC

    W8BC XML Subscriber QRZ Page

    How exactly do you run the installer, Tom. I see a file called When I open it up I see this:

    if [ -d /System/Library/Extensions/SiLabsUSBDriver.kext ]; then
    sudo kextunload /System/Library/Extensions/SiLabsUSBDriver.kext
    sudo rm -rf /System/Library/Extensions/SiLabsUSBDriver.kext

    if [ -d /System/Library/Extensions/SiLabsUSBDriver64.kext ]; then
    sudo kextunload /System/Library/Extensions/SiLabsUSBDriver64.kext
    sudo rm -rf /System/Library/Extensions/SiLabsUSBDriver64.kext

    if [ -d /Library/Extensions/SiLabsUSBDriverYos.kext ]; then
    sudo kextunload /Library/Extensions/SiLabsUSBDriverYos.kext
    sudo rm -rf /Library/Extensions/SiLabsUSBDriverYos.kext

    if [ -d /Library/Extensions/SiLabsUSBDriver.kext ]; then
    sudo kextunload /Library/Extensions/SiLabsUSBDriver.kext
    sudo rm -rf /Library/Extensions/SiLabsUSBDriver.kext

    Do I paste all of that into a Terminal prompt?

  4. W8BC

    W8BC XML Subscriber QRZ Page

    Found a video so I figured out how to run the installer. Thanks for you help.
  5. KC3PGU

    KC3PGU Ham Member QRZ Page

    would like to see that. I didnt think thee was a work around as of yet.
  6. DL2RUM

    DL2RUM Ham Member QRZ Page

    My suggestion is to uninstall all the SiLabs stuff, since it is not required for Icom.
    N6YWU likes this.
  7. VA3RMV

    VA3RMV Ham Member QRZ Page

    For radios such as the FT-991A, that require the SI Labs CP2105 driver in Bg Sur. The support site now indicate that an updated driver has been released.
    This is the note posted on their support site.

    Update (22/Dec/2020): We would like to update that our VCP driver which support macOS Big Sur is already published. You can find and download it from our website or from link below:

    I installed it today and now can control my FT-991A once again.
  8. N6YWU

    N6YWU Ham Member QRZ Page

    Did you try it with the SI Labs driver un-installed?
    Apple recommended USB-serial drivers are already built into Catalina and Big Sur.
    Your Mac and your radio will likely work more reliably without the 3rd party driver.
  9. K3DCW

    K3DCW QRZ Lifetime Member #212 Volunteer Moderator Platinum Subscriber Life Member QRZ Page

    I seem to recall that some of the Yaesu rigs use a slightly different version of the SILabs chipset which is not supported by Big Sur's built-in driver.
  10. N6YWU

    N6YWU Ham Member QRZ Page

    Sure, but you should test first to find out if your rig is one of those aledgedly slightly different ones, or one where you don't need to install anything, and it just works.

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