When I try to install the RRCirkits LocoBuffer-USB driver FTDIUSBSerialDextInstaller_1_5_0.dmg the installation fails and I get this error message:
OSSystemExtensionErrorValidationFailed = 9
(An error code that indicates the manager can’t validate the extension)
I need help. It may be that my iMac is too old but I don't know that.
iMac 27″, macOS 10.15
Here are some details:
I’m trying to install on this Mac -->
iMac (27-inch, Late 2013)
Catalina 10.15.7 (19H2026) --> latest version my Mac can ascend to 64 bit
The installation succeeds on my Mac Air with Monterey 12.x
LocoBuffer-USB:
Product ID: 0xc7d0
Vendor ID: 0x0403 (Future Technology Devices International Limited) Version: 6.00
Serial Number: FTR0MA7I
Speed: Up to 12 Mb/s
Manufacturer: RR-CirKits
Need help installing a driver
