[Q] [ZE500KL / Z00ED] Downgrade MM to Lollipop ?

Is it possible to me for downgrading from MM 6.0.1 to Lollipop (any fw version) ?
I can go to TWRP Tethered with this :

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adb reboot bootloader
fastboot boot twrp-x.x.x.x.img

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My Devices :

HTML Code:

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ZE500KL / Z00ED
Running MM 6.0.1
Bootloader unlock
Rooted, Xposed.

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If you may, please give me the link of original thread or write detailed instruction.
Thank you :)