how i know my HuiFei head unit screen resolution ?

dear friends
1- how i know my HuiFei head unit screen resolution ?
2- I the software upgrade for my unit as lately it give me a lot of error and the radio sound stops till i restart the unit
i have unit MCU MTCB - KGL4 - V2.08 OCT 24 2014 16:48:56 MODEL S07
android version 4.4.4-10122014
kernel version 3.0.36+
root # ubuntu #262
build no. rk 3066 -eng 4.4.4 10122014 .11:36 :22
thanks