Importent:
Make full backup of you current ROM and Data !!
Install via TWRP
I have a TWRP 2.8.7.1 ( with some restiction but works..
if you have the same, ignore the option "unable to mount / Preload " !!
I tried on my Lenovo K920 PRO CN. working very well, no bugs found still,
If there is no LTE/ 4G connectivity, just reocover it from your Old ROM backups by choosing Modem restore,
Flash GApps, Dolby A T M O S, SUPERSU ROOT separately
your Lenovo VIBE Z2 K920 Pro will get a new life specially the CN. Version…
If something goes wrong, You are resposable for you device, you must know what are you doing !!