[ How to ?? ] Root the Samsung Galaxy Note 8 Exynos Variant

We’re starting to see more and more people getting their hands on the new Samsung Galaxy Note 8, so for those of you looking for some help in rooting your device, XDA Recognized Developer dr.ketan has made a simple step-by-step guide for you. This guide will walk you through how to gain root access to the device using SuperSU. The developer also promises to provide an EFS backup tool so you can save the important data in this partition.
Once your device is rooted, you open up the device to some interesting modifications such as flashing the popular audio mod called Viper4Android. Of course, there are already a ton of things you can do without root on Samsung devices such as blocking ads and disabling bloatware, but having root access is an added benefit nonetheless.
Check out this guide in Galaxy Note 8 forum

[How to?? ]Modify Galaxy S8 and S8+ navigation keys look like stock Android's

The Samsung Galaxy S8 represented a departure from previous iterations in that it uses software-based navigation buttons versus the capacitive keys/physical home button similar to that of stock Nexus and Pixel devices. This change led to the creation of a modification that can make the Galaxy S8’s navigation icons look like the stock Google Pixel's.

To make the change, download any of the .apk files listed in the XDA Developers thread here. Since these are files not found through the Play Store, you will also need to allow installation from unknown sources within the Settings menu. After that is done, install the files and reboot your Galaxy S8 or Galaxy S8 Plus. Once you power up your phone, you should see different navigation keys.

There are a few things to keep in mind, the biggest being that any of the .apk files only acts as an overlay – it does not completely replace the default navigation buttons.

Also, if you use the always-on display, the default home button will show up, the button slightly moves from side to side to prevent screen burn-in, an issue with AMOLED panels.

Finally, you cannot disable the overlaid navigation buttons from within an app. If you want to go back to the old default navigation keys, uninstall the download .apk file from the application manager and reboot the phone.

Also you can follow the video here for installation purpose.