MacBook Pro 2016 (Touch Bar) in “Critical Update” loop
Solution 1:
Weird enough I just had this, I unplugged all the USB-C devices and then did a power cycle and it booted fine. I think it's time to build a backup computer.
Solution 2:
I solved this by using my mobile hotspot - for some reason my office/home wifi kept going in a loop. Might be worth a try?
Solution 3:
I had a similar solution. At home i had that Problem. Via WiFi and LAN Cable. at the office it just worked at the first try.
Solution 4:
Uninstall Hands Off! in Safe Mode boot and reboot Mac.