Galaxy S21 FE 5G

Download Samsung Firmware SM-G990U3

Samsung Galaxy S21 FE 5G

The latest firmware for Samsung Galaxy S21 FE 5G (SM-G990U3) is G990U3UESNIZI2 with Android 16, released on October 22, 2026 for 18 regions (CSC). Every official firmware build for SM-G990U3, newest first: one row per build with all regions (CSC) that received it.

Latest build
G990U3UESNIZI2 Android 16 · 20 days ago
Builds
51 builds
Regions (CSC)
18 regions

Firmware builds for SM-G990U3

Each firmware build has its own page at https://samfirm.shop/build/{PDA}, where {PDA} is the build number from the list above. Example: https://samfirm.shop/build/G990U3UESNIZI2

SM-G990U3 update history

SM-G990U3 started on Android 12 and has received 4 major Android upgrades; it now runs Android 16. The newest build, G990U3UESNIZI2, was released on October 22, 2026 with the October 2026 security patch. That patch (SMR Oct-2026) fixes 62 vulnerabilities, 9 of them critical. Over the last 12 months SM-G990U3 received 9 builds, spread over 8 different months. Samsung guarantees security updates for this model until January 26, 2027.

Device specifications

Launched with
Android 11
Display diagonal
16.3 cm (6.4")
Display resolution
2340 x 1080 pixels
RAM
8 GB
Rear camera resolution
12 MP
Rear camera type
Triple camera
Battery capacity
4500 mAh
Weight
177 g

Specifications of SM-G990B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

Changelog for SM-G990U3

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

One UI 8.0 (Android 16)
Productivity

Check stock prices without unlocking
Stocks you follow on Google Finance with big price changes will appear on your Now bar at the end of the trading day.

Easier file sharing with Quick Share
It's never been easier to send and receive files. Tap the Quick Share button in quick settings to get started. You can receive files while the Quick Share screen is open and send files to others directly from Quick Share.

Sticky notes
Add quick annotations on top o...

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

• Security

The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

One UI 7.0 Upgrade (Android 15)
Bold new look

Visual enhancements
Enjoy a more sophisticated and unique look. One UI 7 introduces a stunning redesign to key components including buttons, menus, notifications and control bars, providing a more consistent visual experience with curves and circles. Beautiful new colors, soft animations, and an innovative blur effect that's unique to One UI make information hierarchy clearer and help you focus on important information.

Reimagined Home screen
Fr...

Show 15 older builds

• The security of your device has been improved.

• Circle to Search
Circle to Search with Google lets you easily learn more about anything shown on your screen without switching apps. Just touch and hold the Home button or navigation handle, then circle anything on the screen to start a Google search.
• Security
The device is protected with improved security.

• The security of your device has been improved.

One UI 6.1 Upgrade
Create epic images

Effortlessly enhance your photos
Get special AI recommendations for enhancing your photos and videos. You'll find options for adding star trails, colorizing, and more. Suggestions appear when you tap the i button in Gallery.

Copy and paste from one image to another
Add a missing element to your picture. Just clip an object from an image in Gallery, then go to the image where you want to paste it and choose Paste from clipboard in the More options menu....

• The security of your device has been improved.

Similar Models

Frequently Asked Questions

What is the latest Android version for SM-G990U3?

The newest firmware for SM-G990U3 runs Android 16: build G990U3UESNIZI2, released on October 22, 2026.

When did SM-G990U3 get its last update?

The latest build for SM-G990U3, G990U3UESNIZI2, was released on October 22, 2026 (4 days ago).

How often does SM-G990U3 get updates?

Over the last 12 months SM-G990U3 received 9 builds, with at least one new build in 8 different months.

Is the firmware for SM-G990U3 official?

Yes, all firmware files for SM-G990U3 are 100% official, original, and obtained directly from Samsung servers.

How to flash Samsung SM-G990U3 using Odin?

To flash SM-G990U3, you need to download the appropriate firmware, put your device into Download Mode, and use the Odin tool to load the BL, AP, CP, and CSC files.

Can I downgrade the Android version on SM-G990U3?

Downgrading is only possible if the bootloader version (binary bit) of the old firmware matches the current one. Always check the binary version before flashing SM-G990U3.