custom rom for acer liquid z410 based on lollipop or marshmallow ?

Hello , i would like to have a custom rom for my acer liquid z410 , i would like tu hav a custom rom based on lollipop or marshmallow ? If it's exist can you tell me where i download it ?
Or can you telle me how i update my stock rom to lollipop or marshmallow ?

thank you an sorry for my English oupsss ;)

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