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

Samsung Galaxy S21 Ultra is a huge, powerful Android phone with some big upgrades over the Galaxy S20 Ultra. The device comes with a 6.8-inch Dynamic AMOLED 2X display, Contour Cut Camera, and Corning Gorilla Glass Victus. It is powered by Qualcomm Snapdragon 888 or Exynos 2100 (Global).

If you’re using the new Samsung Galaxy S21 Ultra 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.

Samsung Galaxy S21 Ultra 5G Device Overview:

The Samsung Galaxy S21 Ultra features a 6.8-inch Dynamic AMOLED panel with a refresh rate of 120Hz. It has a resolution of 1440 x 3200 pixels and an aspect ratio of 20:9. The brightness is also quite high, with maximum peak brightness reaching up to 1500 nits, making outdoor visibility no issue at all. As for the protection, we have the industry best Gorilla Glass Victus protection in the S21+, and we also have the HDR10+ certification for HDR video playback.

For sensors, we get the under-display ultrasonic fingerprint sensor, accelerometer, gyro, proximity, compass, and barometer. Again, we get the Samsung exclusive Samsung DeX, Samsung Wireless DeX, Bixby natural language command and dictation, and Samsung Pay with the S21 Ultra, too, just like the S21+. The smartphone is available in five color options: Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, and Phantom Brown. The base variant of the Samsung Galaxy S21 Ultra starts from 105,999 INR or 1,178.95 USD.

Samsung Galaxy S21 Ultra 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 Ultra 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 Ultra 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 Ultra 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 Ultra 5G
Get back the device warranty (if applicable)

List of Samsung Galaxy S21 Ultra 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
G998USQSBGXF1	June 2024 Security Patch
G998BXXUBGXE7	May 2024 Security Patch
G998BXXU9FWK2	November 2023 Security Patch
G998BXXS9EWI1	September 2023 Security Patch
G998BXXS9EWH1	August 2023 Security Patch
G998U1UES6EWC9	April 2023 Security Patch
G998USQU6EWD1	April 2023 Security Patch
G991BXXU1AUB3	February 2021 Security Patch
G991BXXU1AUAB	January 2021 Security Patch

Steps to Install Stock Firmware on Samsung Galaxy S21 Ultra 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

ODIN Flash Tool | Download
Samsung Kies | Download
Samsung USB Drivers | Download

Pre-Requirements:

Supported for: Samsung Galaxy S21 Ultra 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 Ultra 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 Ultra 5G device. For any help from us, comment down below.