ANDROID Problem With JCV on android carDVD

Dear Admin/User, I have a Chinese carDVD runnibg Android 5.1.1 in which i installed streetpilot 2.37 from below post

http://www.gpspower.net/garmin-on-ph...2-5-1-1-a.html

Maps for CNME downloaded fromthis post...

http://www.gpspower.net/garmin-maps/...2017-20-a.html

Everything runs fine except the JCV. whenever the time to show the JCV comes, the top screen shows a blank bar and then it disappears. I have tried all JCV files downloaded from above post but no success. I think it has something to do with the right resolution/split or full screen/raster or SVG stuff. Any expert advise? and is there any archive to download latest JCVs?

Many thanks in advance.