How can I fix com.android.systemUI?

[AC Question]

my phone's com.android.systemUI aint responding

my device is hitech air a3. recently i rooted my phone. as you know once rooted it allows to uninstall any manufacturer's set app. i mistakenly uninstalled my phone's setting. so now it says com.android.systemUI isnt responding. i tried doing factory reset by pressing volume+ and power button but android recovery mode aint coming. my phones android version is 4.4.2 - kitkat. please help