List grabbed from running `strings` on the bootloader; it's probably incomplete.
Most of these commands are untested, and all of them sound like they can seriously break your phone. Be careful.
Tested: (all on a bootloader unlocked device)
fastboot oem uart enable: changes "Console" on the...
Huawei NexUs 6p All in One Thread
Factory images for Nexus 6P [Angler]
* Goto Settings /About Phone/ Tap on Build numbers 7 to 9 times until Developer mode is enabled.
* Goto Developer Option enable OEM Unlocking &...