your right and i had the same issue with usb drives although i did switch drives but finally every game installed fine with usb 2.0HDD so i would recommend USB Hard drive or USB Drives.This would have nothing to do with a firewall as they are not being installed over your network. I had similar errors and they were related to my failing usb stick. Try reformatting your usb drive first and see if that helps, if not try another usb drive and see if you get the same results. If you only have 1 usb 3 drive just try a small game on a usb 2 drive if you have an extra one of those just for testing purposes.
It fail before Install .pkg File
i use an usb multicard-reader with an MicroSD 128gb formatted in exfat
I used an external hard drive with 4tb memory space and that has solved my problem, thanksThat's most likely your problem. If you have just a regular usb pen drive or ext hdd switch to one of those and it should work without issue.
I used an external hard drive with 4tb memory space and that has solved my problem, thanks
Failed to install... I had same issue I downloaded both base game and update but won't installDid it fail to install or you just cant start them?