is the primary method to fix boot loops, unroot your device, or revert to the original factory software.

This guide outlines the steps using the official Samsung flashing tool, 1. Pre-requisites

Before starting, ensure you have the following ready to prevent "bricking" your device: Backup Your Data

to avoid Factory Reset Protection (FRP) locks after flashing. 2. Required Files You will need to download two main items: Odin Flashing Tool : Download the latest version of Odin (e.g., Odin3 v3.14.4

Click the buttons in Odin and select the corresponding files from your extracted firmware folder:

Installing the official stock ROM (firmware) on your Samsung Galaxy A9 (2018) SM-A920F