stk500_getsync() and stk500_recv() errors for Arduino Uno on Mac

Using Arduino Avrdude, stk500, Bootloader issues
#1

After uploading firmware through dfu-programmer to finally find my board under ports (I haven't been able to do this ever) I tried to upload blink sketch to test it but it gave me the stk500_getsync() error messages.

-Genuine Uno
-macOS 10.14.1
-only have thunderbolt (usb-c) ports
-have used a couple different cords and adapters

currently showing in ports as /dev/cu.usbmodem14401

Also pin 13 LED is always on

Tried to burn bootloader but it said error while burning bootloader

#2

Do you have a USB 2.0 hub you can connect to see whether the problem is caused by the USB 3.0? USB 3.0 ports have been reported to cause problems in the past.

#3

I've tried with a usb B to C cable that plugs right into the thunderbolt port, an A to B cable that plugs into an Apple A to C adapter then into the thunderbolt port, and an A to B cable that plugs into a hub that goes in the thunderbolt ports. No luck with any of them.

#4