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Author Topic: FTDIUSBSerialDriver_v2_4_4 (macOS)  (Read 460 times)

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FTDIUSBSerialDriver_v2_4_4 (macOS)
« on: May 27, 2020, 03:42:14 PM »


Customers using macOS 10.15 Catalina have been experiencing signature issues with FTDI's VCP driver.
The following driver should resolve these issues:


Please let us know if you have any feedback on this driver by either posting here or emailing us at support1@ftdichip.com

Best Regards,
FTDI Community


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Re: FTDIUSBSerialDriver_v2_4_4 (macOS)
« Reply #1 on: June 19, 2020, 11:15:59 AM »


I am facing the issues still with this version. I am on macOS Catalina 10.15.5.

If you need any input from my side to provide more value, let me know and I will support.

sudo kextutil /Library/Extensions/FTDIUSBSerialDriver.kext
Untrusted kexts are not allowed
Kext with invalid signature (-67050) denied: /private/var/db/KernelExtensionManagement/Staging/tmp.MOlSZN/F1E8F36B-1CB8-4356-919C-90DD52584F6C.kext
Bundle (/Library/Extensions/TrimDriver.kext) failed to validate, deleting: /private/var/db/KernelExtensionManagement/Staging/tmp.MOlSZN/F1E8F36B-1CB8-4356-919C-90DD52584F6C.kext
Unable to stage kext (/Library/Extensions/TrimDriver.kext) to secure location.
    Dependency lacks appropriate value for OSBundleRequired and may not be available during early boot:
        com.apple.iokit.IOSerialFamily - Safe Boot

(kernel) Notice - new kext com.apple.driver.usb.AppleUSBHostPlatformProperties, v1.2 matches prelinked kext but can't determine if executables are the same (no UUIDs).
« Last Edit: June 19, 2020, 11:20:00 AM by pharmonie »


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Re: FTDIUSBSerialDriver_v2_4_4 (macOS)
« Reply #2 on: June 24, 2020, 03:36:31 PM »

I am having the same issue as @pharmonie with this new driver. I am trying to use the Arduino IDE with a Sparkfun redboard but am completely blocked by this issue. Are there any workarounds?