Booting into Fastboot mode is different on the Huawei Watch than with the Moto 360 or the LG G Watch. For the Huawei Watch, perform the following steps:
1) Hold down the power button.
2) The screen will go black for about 2 seconds and then boot into the Huwaei logo. Keep holding down the power button.
3) Wait for the first vibration, release the power button and then immediately give the power button one short press.
If you feel the second vibration, you waited to long to do the release and press. Start over.
Hope this helps others. This took me way too long to figure out on my own.
1) Hold down the power button.
2) The screen will go black for about 2 seconds and then boot into the Huwaei logo. Keep holding down the power button.
3) Wait for the first vibration, release the power button and then immediately give the power button one short press.
If you feel the second vibration, you waited to long to do the release and press. Start over.
Hope this helps others. This took me way too long to figure out on my own.