I've the same version "Maya-L41C432B132".
I've received via OTA a new update "Maya-L41C432B132-B136" but can't apply, maybe because is unlocked bootloader.
Any advance in rooting this version?
add:
This HUAWEI Y6-2017 have a MediaTek MT6737T, not a kirin 620 processor.
Thks.