Create backup: make a copy (backup) of all your files on another device: pen drive, external HD or in the cloud, for example. Caution: do not start root without doing this, especially if your Samsung Galaxy J6 + is not new.
Fully charge the cell phone battery
Unlock the bootloader: it is a program that is stimulated every time we turn on the phone, turning on the right operating system. It is not exclusive to Android, it is present in all equipment equipped with an operating system.
Unlock the bootloader: it is a program that is stimulated every time we turn on the phone, turning on the right operating system. It is not exclusive to Android, it is present in all equipment equipped with an operating system.
Activate the "USB debugging" and "OEM unlock" features in "Settings" on your Samsung Galaxy J6 +. Or, go to “About the device” and tap 8x “Version number” to enter the developer features, download and place the Android platform on the Google website. These guidelines are for Windows machines, however there are choices for Mac and Linux as well. Remove the compressed files and save them in the C: android-sdk directory.