In this tutorial, we will guide you on how to install the Samsung SM-G991B (Galaxy S21) flash file using the Samsung flash tool (also known as the ODIN flash tool). On this page, you will find the official stock firmware file for the Samsung Galaxy S21 SM-G991B, drivers, and flash tool.
By flashing the Stock ROM file, you can always fix the device software issue such as boot loop, lag, soft brick or hard brick, remove pattern lock, FRP lock, and many more.
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Page Contents
Samsung Galaxy S21 SM-G991B Firmware Flash Files:
| Flash File Name: SM-G991B_G991BXXU9FWK5_14.0_file.zip Build Number: G991BXXU9FWK5 Security Patch: November 2023 Model: SM-G991B Android Version: 14.0 |
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| Flash File Name: SM-G991B_G991BXXS9EWJH_13.0_file.zip Build Number: G991BXXS9EWJH Security Patch: October 2023 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXS9EWI3_13.0_file.zip Build Number: G991BXXS9EWI3 Security Patch: September 2023 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXS9EWI1_13.0_file.zip Build Number: G991BXXS9EWI1 Security Patch: August 2023 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXU8EWF1_13.0_file.zip Build Number: G991BXXU8EWF1 Security Patch: June 2023 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXU7EWCH_13.0_file.zip Build Number: G991BXXU7EWCH Security Patch: April 2023 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXS6EWBB_13.0_file.zip Build Number: G991BXXS6EWBB Security Patch: March 2023 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXU6EWAF_13.0_file.zip Build Number: G991BXXU6EWAF Security Patch: February 2023 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXS5DVL3_13.0_file.zip Build Number: G991BXXS5DVL3 Security Patch: January 2023 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXU5DVKF_13.0_file.zip Build Number: G991BXXU5DVKF Security Patch: December 2022 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXS5DVKE_13.0_file.zip Build Number: G991BXXS5DVKE Security Patch: November 2022 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXU5DVK3_13.0_file.zip Build Number: G991BXXU5DVK3 Security Patch: October 2022 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXS5DVK1_13.0_file.zip Build Number: G991BXXS5DVK1 Security Patch: October 2022 Model: SM-G991B Android Version: 13.0 |
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| Flash File Name: SM-G991B_G991BXXS5CVIF_12.0_file.zip Build Number: G991BXXS5CVIF Security Patch: October 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXS5CVHI_12.0_file.zip Build Number: G991BXXS5CVHI Security Patch: September 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU5CVGC_12.0_file.zip Build Number: G991BXXU5CVGC Security Patch: August 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU5CVGB_12.0_file.zip Build Number: G991BXXU5CVGB Security Patch: August 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXS5CVFB_12.0_file.zip Build Number: G991BXXS5CVFB Security Patch: July 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU5CVF1_12.0_file.zip Build Number: G991BXXU5CVF1 Security Patch: June 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU4CVD2_12.0_file.zip Build Number: G991BXXU4CVD2 Security Patch: April 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU4CVC4_12.0_file.zip Build Number: G991BXXU4CVC4 Security Patch: March 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU4CVB8_12.0_file.zip Build Number: G991BXXU4CVB8 Security Patch: March 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU4CVC4_12.0_file.zip Build Number: G991BXXU4CVC4 Security Patch: March 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU4BVB1_12.0_file.zip Build Number: G991BXXU4BVB1 Security Patch: February 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXS4BVAA_12.0_file.zip Build Number: G991BXXS4BVAA Security Patch: February 2022 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU4BULF_12.0_file.zip Build Number: G991BXXU4BULF Security Patch: December 2021 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXS3BUL6_12.0_file.zip Build Number: G991BXXS3BUL6 Security Patch: December 2021 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXS3BUL1_12.0_file.zip Build Number: G991BXXS3BUL1 Security Patch: December 2021 Model: SM-G991B Android Version: 12.0 |
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| Flash File Name: SM-G991B_G991BXXU3BUKG _11.0_file.zip Build Number: G991BXXU3BUKG Security Patch: November 2021 Model: SM-G991B Android Version: 11.0 R |
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| Flash File Name: SM-G991B_G991BXXU3BUK8_11.0_file.zip Build Number: G991BXXU3BUK8 Security Patch: November 2021 Model: SM-G991B Android Version: 11.0 R |
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| Flash File Name: SM-G991B_G991BXXS3AUHD_11.0_file.zip Build Number: G991BXXS3AUHD Security Patch: September 2021 Model: SM-G991B Android Version: 11.0 R |
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| Flash File Name: SM-G991B_G991BXXU3AUGM_11.0_file.zip Build Number: G991BXXU3AUGM Security Patch: July 2021 Model: SM-G991B Android Version: 11.0 R |
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| Flash File Name: SM-G991B_G991BXXU3AUF6_11.0_file.zip Build Number: G991BXXU3AUF6 Security Patch: June 2021 Model: SM-G991B Android Version: 11.0 R |
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| Flash File Name: SM-G991B_G991BXXU3AUE1_11.0_file.zip Build Number: G991BXXU3AUE1 Security Patch: May 2021 Model: SM-G991B Android Version: 11.0 R |
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| Flash File Name: SM-G991B_G991BXXU3AUDA_11.0_file.zip Build Number: G991BXXU3AUDA Security Patch: April 2021 Model: SM-G991B Android Version: 11.0 R |
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| Flash File Name: SM-G991B_G991BXXU1AUB3_11.0_file.zip Build Number: G991BXXU1AUB3 Security Patch: February 2021 Model: SM-G991B Android Version: 11.0 R |
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| Flash File Name: SM-G991B_G991BXXU1AUA4_11.0_file.zip Build Number: G991BXXU1AUA4 Security Patch: January 2021 Model: SM-G991B Android Version: 11.0 R |
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Steps to Flash Stock ROM File on Galaxy S21 SM-G991B
Before we get straight to the steps to Install Stock Firmware on your Samsung Galaxy S21, let us take a look at the pre-requirements first.
Pre-Requirements:
- This Guide is for Samsung Galaxy S21 SM-G991B
- You need a Windows PC/Laptop and a USB cable to flash the firmware.
- Charge your device with a minimum of 50% battery backup.
- You have to download the latest Samsung USB Drivers and install them on your PC.
- Make sure that you have ODIN Software installed on your PC.
- Take a backup of your device (No Root) before doing anything.
Now, let’s take a look at Steps to flash Stock ROM on Samsung Galaxy S21.
Disclaimer:
We’re at GetDroidTips won’t be responsible for any kind of damage/error that occurs to your handset while/after following this guide or flashing any file. Proceed at your own risk.
- Download the Samsung SM-G991B firmware flash file
- Extract the contents of the firmware flash file zip.
- Launch the ODIN application
- Load the firmware files in their appropriate section
- Once you have loaded, now connect your phone to the computer (make sure to boot your device into download mode)
- Notice that the CO port will light up on Odin once you connect your phone.
- Click the Start button to install the firmware on your Samsung device.
- That’s it! You will see a PASS message once the installation is complete.
Check out our full depth video guide as well.
We hope that this guide will be helpful to you. If in case, you’re facing any issues, feel free to ask in the comments below.