MX4 crashes the apps

Hi guys!
After trying to change Davlik to ART my apps started to crashing a lot. Every day i get some apps crahed a few times with no reason.
I’ve tried to change firmware, hard reset, clear data. Nothing has helped. I tried to get back to Davlik, same crap. Is there any way to fully clear my phone? Even system files(any txt and so on) should be reseted. I don’t know what to do. Help me please)

Firmware 4.2.8i
MX4
1_1449358292799_JR0b41DhnMI.jpg 0_1449358292799_2xjV7l5GZS0.jpg

last edited by steelhero
Meizu MX4 Pro

@steelhero mabye you should upgrade to the latest version? with clearing data (just read the FAQ)

last edited by mx4pro

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