Optional if you want the custom rom with: Android 7.The Android 10 (aka Android Q) is now official and Pixel devices, Essential Phone, Redmi K20 Pro, OnePlus 7 Pro devices are receiving the latest Android version Make Android Feel Like New With a Custom ROM.Press question mark to learn the rest of the keyboard shortcuts Here is tutorial for install non signature apk on Non root device, by using VMOS and Custom Rom which made by AndnixSH.Step 1: When you download VMOS Pro in the first time, open the VMOS Pro app. That is to run another complete Android system through an application. VMOS is based on Virtualization Technology or more simply put Virtual Machine (VM).