H960 Bootloop after Multi Window for all apps

Hi,
I have H960 LP rooted and i want to enable Multi Window for all apps.
I did everything just like here yt /watch?v=HJo921-xpr0
I change only "persist.split window.support_all=true" in "build.prop" file.
Restart and ......... LG logo! ..... only .......

Only downloaded mode? Can I do anything else?


Sory for english.

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