To have full-hd /system/build.prop
video.use.overlay=0
In build system change for example radxaudoocommon/Android.mk and touch file build/tools/buildinfo.sh to rebuild build.prop with “make -j4” operation.
PRODUCT_PROPERTY_OVERRIDES += \
video.use.overlay=0
./mkimage.sh ota sudo /lab/radxa/upgrade_tool di -b rockdev/Image/boot.img sudo /lab/radxa/upgrade_tool uf rockdev/update.img