Does any one know that if you update of A16 update you will not able to side lode app of third party developer or developer which is not verified by Google itself ex- mode of any apps, apps developed by new or small developers form github or any where else which challenge the android core belief, thus step has been taken to improve the security of the devices and prevent malware and other thing from Infecting your devices, there is no loop hole to avoid this in any OS except hello UI