[Q] Z1 Watch phone how to roll back oryginal android from mtk backaup tools?

Hi. Last month ago i update my Z1 watch phone by the one program on the XDA forum but after that i lost GPS. Now I want to roll back to oryginal android. I have backup made by MTK 6516 Backup tool but I dont know how to apply it back to the Z1 watch.
Thanks for help.

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