instal the last version for android EarthTime 6.24.4

You'll also want to be sure you understand the process and have all the tools you need up and running. Check into the various backup and restore apps and be sure to have Google Photos set up to back up your pics and videos before you start clicking anything. Know that things like game progress, message histories, photos, and videos inside your messenger app, and any other third-party data that's not cloud-synced may be gone forever because a downgrade of the OS always requires a full device wipe.

There is a lot of stuff you're not going to be able to back up without having root access.

Read, understand what you've read, then do it.Download the version of the software you want to install and any utilities you need to install it.Back up everything you can to the cloud.If you have a phone that makes it possible, doing it is simple. Companies, even Google, go to great pains to try and get all products on the same version for the reasons we listed above. Frequently, a new version will first install a new version of the bootloader, and it won't flash software that's older, nor it will not allow you to re-flash the older bootloader. That still doesn't mean it will work, though. We've seen other companies offer a way to unlock bootloaders and have archives of older versions for certain phones that were sold unlocked.

If you have a Pixel or a phone from another company that is willing to let you unlock your phone's bootloader and will provide you with a catalog of all the various versions of Android that apply to it, rolling back might be reasonably easy. (Image credit: Ara Wagoner / Android Central)

Instal the last version for android EarthTime 6.24.4