Samsung Galaxy S21 5G Firmware Flash File [Unbrick, Restore Stock ROM]

If you’re using the new Samsung Galaxy S21 5G and searching for the stock firmware to install, this article is for you. We have provided the device firmware link, pre-requirements, and a full-depth installation guide as well.

If you’re using Android for some time, then you obviously know that this is the most popular smartphone OS around the world due to its customizations. Plenty of users use Android only for customizations, modifications, or tweaking their devices. But in that scenario, sometimes users brick their devices or face boot loop issues or any kind of software-related issue. Therefore, the official Stock ROM comes in handy. If you’re also facing a similar kind of issue and want to go back to the Stock ROM, you can do it manually by flashing the firmware.

Galaxy S21

Samsung Galaxy S21 5G Device Overview:

The Samsung Galaxy S21 features a 6.2-inch Dynamic AMOLED panel with a 120Hz refresh rate. The screen can go all the way up to 1300 nits under extreme sunlight conditions. It has a resolution of 1080 x 2400 pixels and an aspect ratio of 20:9 ratio. With the Samsung S20, we get the Exynos 2100 chip built on a 5nm manufacturing process. It is an octa-core processor with one Cortex-X1 core clocked at 2.9 GHz, three Cortex-A78 cores clocked at 2.8 GHz, and four Cortex-A55 cores clocked at 2.2 GHz.

In terms of optics, we get a rear quad-camera setup consisting of a 12MP primary sensor paired with an f/1.8 lens, a 12MP ultrawide sensor paired with an f/2.2 lens, and a 64MP telephoto sensor paired with an f/2.0 lens. Coming to the front, we get a single 10 MP sensor paired with an f/2.2 lens. The rear setup can capture 8K videos while the front setup is only limited to 4K video recording.

We get a number of options when it comes to storage variants with 128GB, 256GB, and 512GB of internal storage, with 12 GB of RAM for the lower two variants and 16GB of RAM for the top variant. The phone comes with Android 11 out of the box with OneUI skinned on top of it.

.For connectivity, we get Wi-Fi 802.11 a/b/g/n/ac/6, Bluetooth 5.0, GPS, NFC, USB Type-C 3.2, and FM radio. And for the sensors, we get an ultrasonic under-display fingerprint sensor, accelerometer, gyro, proximity, compass, and barometer. In terms of battery, we get a 4,000 mAh cell that supports 25 fast charging. The S21 is available in four color options: Phantom Gray, Phantom White, Phantom Violet, Phantom Pink.

Samsung Galaxy S21 5G Stock Firmware

Android is an open-source platform where the developers can easily build Custom Firmware and other apps or mod files compatible with any particular Android device. Some times, the user can brick their devices during flashing any custom file or Custom ROM. The smartphone OEMs don’t provide too many customizations or functionalities to the device with a Stock ROM. Though, Stock ROM offers a better user experience and smooth, stable performance over any Custom Firmware.

Whereas, the Custom ROM mainly focused to offer great customizations and visual experience than any Stock Firmware. That does not mean Custom ROM can’t provide a better user experience. But as your daily driver, you will soon notice that your device is getting unusable every day on a Custom ROM.

If you have already flashed any custom firmware on your Galaxy S21 5G model or running on the Stock ROM but have some software performance issues then installing the Stock ROM again will solve your problem. Whereas, if you’re also facing issues like screen freezing, unresponsiveness, boot loops, lags, crashes, battery draining, OTA update issues, and more, then flashing the Stock ROM will be a good idea.

So, here we have shared the full list of Samsung Galaxy S21 5G stock firmware collection with requirements, download links, and installation steps as well.

Check out the advantages of Stock Firmware:

Stock ROM Advantages

  • Easily unbrick your Samsung Galaxy S21 5G
  • Fix the boot loop issue
  • Upgrade and Downgrade the software version
  • Easily unroot your phone
  • Fix the system lag or bug on Samsung Galaxy S21 5G
  • Get back the device warranty (if applicable)

List of Samsung Galaxy S21 5G Stock Firmware Collections:

We will keep updating the latest firmware update details here whenever a new update will be available for your device model.

Build Number Security Patch/Changelog
G991U1UESBGXF1 June 2024 Security Patch (Android 14)
G991BXXSBGXF1 June 2024 Security Patch (Android 14)
G991USQSBGXF1 June 2024 Security Patch (Android 14)
G991BXXSBGXDH May 2024 Security Patch (Android 14)
G991U1UESAFXAB January 2024 Security Patch (Android 14)
G991BXXU9FWK5 November 2023 Security Patch (Android 14)
G991BXXS9EWJH October 2023 Security Patch
G991BXXS9EWI3 September 2023 Security Patch
G991USQS9EWI1 September 2023 Security Patch
G991BXXS9EWI1 August 2023 Security Patch
G991U1UES7EWE3 June 2023 Security Patch
G991BXXU7EWCH April 2023 Security Patch
G991USQU6EWD1 April 2023 Security Patch
G991BXXS6EWBB March 2023 Security Patch
G991BXXU6EWAF February 2023 Security Patch

Steps to Install Stock Firmware on Samsung Galaxy S21 5G

Before going to the installation steps, make sure to follow all the requirements, and download the tools, drivers, and firmware as well.

Download Links


  • Supported for: Samsung Galaxy S21 5G model only.
  • Samsung Kies software – Download from above and install it on your PC.
  • Install the Samsung USB Drivers on your PC as well.
  • You have to install the latest ODIN Flash Tool on your PC.
  • A Windows PC/Laptop and a USB cable is required.
  • Keep your device fully charged or above 60%.
  • Take a complete Backup of Phone Data Without Root.
  • You will also need to enter into the Samsung Download Mode.
Disclaimer: We’re at GetDroidTips will not be responsible for any internal or external damage or error to the device that may happen while or after following this guide. Do this at your own risk.

Instructions to Install Stock ROM on Samsung Galaxy S21 5G

After downloading the stock firmware file, you will need to use the latest Odin Flash Tool to install it on your device. Here is a full-depth installation guide below.

Follow Complete Guidelines

Check out our full depth video guide as well.

Video Tutorial To Install Firmware

Let’s assume that this guide is helpful to you and you’ve successfully installed or updated the Stock Firmware on your Galaxy S21 5G device. For any help from us, comment down below.

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