Download Samsung Firmware SCG09
Samsung Galaxy S21 5G
The latest firmware for Samsung Galaxy S21 5G (SCG09) is SCG09KDS1EYJ1 with Android 15, released on November 12, 2025 for 1 region (CSC). Every official firmware build for SCG09, newest first: one row per build with all regions (CSC) that received it.
- Builds
- 20 builds
- Regions (CSC)
- 1 region
Firmware builds for SCG09
- KDI
- KDI
- KDI
- KDI
- KDI
- KDI
- KDI
- KDI
- KDI
- KDI
- KDI
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- KDI
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/SCG09KDS1EYJ1
SCG09 update history
SCG09 started on Android 11 and has received 4 major Android upgrades; it now runs Android 15. The newest build, SCG09KDS1EYJ1, was released on November 12, 2025 with the September 2025 security patch. No new build has appeared for 11 months, so regular updates for this model have most likely ended.
Changelog for SCG09
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
Visual enhancements
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Reimagined Home screen
Fr...
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
Instantly search for anything on your screen
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.
Effortlessly enhance your photos
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■OS update notice■
Android™ 14 OS update is now available.
The implementation of the OS update will add new functions, improve usability, and change the names of functions and items.
Please check the details and notes about the update on the website in advances, and then implement the update.
Please back up data before implementing the OS update.
After implementing the OS update, you cannot revert to the old one.
As the update file size is large, please use Wi-Fi®.
During the OS update, you...
Show 15 older builds
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
■OS update notice■
Android™ 13 OS update is now available.
The implementation of the OS update will add new functions, improve usability, and change the names of functions and items.
Please check the details and notes about the update on the website of au in advances, and then implement the update.
(https://www.au.com/information/notice_mobile/update/update-202301-scg09/)
Please back up data before implementing the OS update.
After implementing the OS update, you cannot revert to the old one....
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever.
Check out the changes below.
Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone.
One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the...
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
Similar Models
- https://samfirm.shop/model/SCG04
Samsung Galaxy Z Flip 5G
SCG04
Frequently Asked Questions
What is the latest Android version for SCG09?
The newest firmware for SCG09 runs Android 15: build SCG09KDS1EYJ1, released on November 12, 2025.
When did SCG09 get its last update?
The latest build for SCG09, SCG09KDS1EYJ1, was released on November 12, 2025 (11 months ago).
How often does SCG09 get updates?
SCG09 has had no new firmware for 11 months, so regular updates have most likely ended.
Is the firmware for SCG09 official?
Yes, all firmware files for SCG09 are 100% official, original, and obtained directly from Samsung servers.
How to flash Samsung SCG09 using Odin?
To flash SCG09, 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 SCG09?
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 SCG09.