Mediapad 10 S10-201L Help

Tablets: Open Calculator APP, type in "()()2846579()()="
Select "Project Menu"
Select "Background Settings"
Select "USB Ports Settings"
Choose "Manufacture Mode"

Select "Project Menu" -ok
Select "Background Settings"-ok
select "communication port open setting"-ok
dialog box appear "background open" -> confirm then enter password.

how to get password ??
i try Password=Huawei not work
plz help thanksssssssssssssssssssssssssss