Thread: iGO NextGen Version 9.18.28.610238 (Pioneer Avicsync)

I wonder if anyone can help me. I have a Chinese GPS phone running android 4.4.2. When I install this version of Nextgen (Avic) on the removable SD card it installs and runs fine. I can do this with any Igo Nextgen version, always no issue.
I also have a dedicated Chinese Android GPS running Android 4.0.4 and this has been the same with every release until this Avic release. Now when I try to load on the removable SD card (in the correct "iGO_Avic" folder) I get message "failed to install". This happens with every APK file in this thread. I have re-formatted the SD card, tried different SD Cards, removed all the "old" NNG files after uninstall. Still it refuses to install. Can anyone help? I could go back to an earlier version but I really like this version, it is so much better and has everything I want in the new skin. I have even messed with the Sys Txt without luck (and used APK's that change sys txt and do not change sys txt). I have run out of things to try.Any advice?