The most common method is to use Fastboot with the command fastboot oem lock or fastboot flashing lock. The quickest way to revert your phone back to its stock ROM is to restore your Nandroid backup. Assuming you have an up-to-date one available, this shouldn’t result in much—or any—data loss. There are many reasons you might want to revert your rooted phone back to stock Android.

As always any custom ROM does not come with pre-installed GApps (Google Applications) because of Copyright issues. So, you need an extra Oreo 9 GApps (such as Open GApps, MindTheGapps etc.) to be installed via a custom recovery like TWRP recovery. If you didn’t find your device listed, check back later as the list is continuously getting updated. Once flashing is completed, Close the Qfil Tool on your computer and disconnect your Android Smartphone from the computer. The Android Pie firmware comes with numerous changes. Samsung has replaced the Samsung Experience UI with the One UI.
Samsung has already released the stable version of One stock firmware UI 5.1 based on Google’s Android 13. One user interface is a customized version of Android. If you have found any discrepancy or missing information, please feel free to post it in the comment section below, don’t worry I will update as soon as possible.
As already said in some cases if the original stock version is not available for download the nearest possible version is provided. There are phones with obsolete firmware which doesn’t support any current apps, in that case the latest possible working version is listed.