This is a simple app to install GApps and disable items on your Kindle. This was tested on Fire HD 7 4th gen. I do not know the status on HD 6. but in theory it should work just fine. It doesn't make any MAJOR changes to where it would cause a non-booting system.But with all things in the development world, you are taking a risk. I have tested this about 10 times on my own tablet.Obviously, you need root for this. The only known way to root is via KingRoot.The GApps install is a very minimal install to /system that fully works. It is no different than flashing a GApps package in recovery. I am also disabling updates for Play Store and Play Services. The method used is the ones referenced a few times in this forum. I am unable to find the original finder of this information so if you find the original source I will link that content appropriately.The safe way to disable ads on lockscreen and still use profiles or FreeTime is to run this command on every boot. "chmod 000 /data/securedStorageLocation/dtcp/adunits"Changelog:v4: Fixed backwards logic in BootReciever to block or unblock ads on boot. Thanks @ DoLooper for pointing out the bugv3: Updated Gapps with combination found by @ AlbusAngelus and the casting libs needed he found. Changed the layout to more material designv2: Found bug with button not showing enabled. Found MAJOR bug with the pm block method of disabling ads on lockscreen. Found workaroundv1: Original Release