Reset to factory default

Android Tablets Hi10 XPro
1

Hi! Since there’s no option to perform a hard reset using volume buttons and power buttons. I would like to ask for help flashing it.

2

CHUWI Hi10-XPro type-CWI559
S/N: JH10XpAB60240807277

3

I forgot the passode and I can’t get in. Please help.