How to upgrade the COLMI SKY 2 smart watch system?

SKY 2 version number:
MOY-ZAQ2-1.7.3-ED4D288C
SKY 2 authorization code:
GBQCSAAN

Preparations:

1. An Android OS phone, and the phone is connected to the network.
2. SKY 2 power is more than 50%.

Upgrade steps:

1. Download and install "HsOtaTools" with your Android phone. Download "HsOtaTools"
2. Open Bluetooth and GPS on your Android phone.
3. Open "HsOtaTools" and agree to all permission requests.
4. Enter the authorization code GBQCSAAN , and select "升级User区域", then click "确定". When "MOY-ZAQ2-1.7.3" is displayed, click "扫描".
   
5. Select the SKY 2 to upgrade (select according to the MAC address)
   
6. Wait for the upgrade to complete.
   
7. Displaying this interface means upgrading SKY 2 to completion.
   

Video: