How to Un brick a kingwear KW88

Hello
I bought a kingwear kw88 smartwatch from china. it came with baidu insteed of google services. i was trying to install google service and kingroot installed on it. but in the mean time i did not noticed that the google service version i was trying to install was for a mobile . now my watch is stuck in a bootloop where is starts and goes to a screen where i have to select from
1. reboot system now
2. Apply update from ADB.

and the way to select is the power button . and up and down...

How to Un brick a kingwear KW88

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