Samsung Galaxy S23 Ultra
The latest firmware for Samsung Galaxy S23 Ultra (SCG20) is SCG20KDS1EZH1 with Android 16, released on September 9, 2026 for 2 regions (CSC). Every official firmware build for SCG20, newest first: one row per build with all regions (CSC) that received it.
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/SCG20KDS1EZH1
SCG20 started on Android 14 and has received 2 major Android upgrades; it now runs Android 16. The newest build, SCG20KDS1EZH1, was released on September 9, 2026 with the August 2026 security patch. That patch (SMR Aug-2026) fixes 54 vulnerabilities, 8 of them critical. Over the last 12 months SCG20 received 5 builds, spread over 5 different months.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
Fresh new look
One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus...
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
See calls on the screen
Call captions show what each person says on the screen in real time during calls. Follow the conversation on your screen to make sure you don’t miss anything.
Create unique pet portraits
Bring out your pet's personality with Portrait studio. You can now apply portrait effects to pictures of dogs and cats in addition to people. Choose from styles like Fisheye lens, oil painting, and more.
Translate emergency alerts
Never miss importa...
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
Write like a pro
Let Galaxy AI help you with writing tasks by tapping the 4-star icon that appears whenever you select text. You can correct spelling and grammar, change tone, summarize, or apply formatting. You can even start with a short snippet and let the AI do the writing for you.
Transcribe and summarize recorded calls
It's easier than ever to review the content of your recorded calls in the Samsung Phone app. You can view the entire conversat...
· 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.
Translate phone calls in real time
Need to call someone who doesn't speak your language? No problem! Live translate provides real-time translation during calls. The other person on the c...
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
■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 of au in advances, and then implement the update.
(https://www.au.com/information/notice_mobile/update/update-202312-scg20/)
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.
The newest firmware for SCG20 runs Android 16: build SCG20KDS1EZH1, released on September 9, 2026.
The latest build for SCG20, SCG20KDS1EZH1, was released on September 9, 2026 (1 month ago).
Over the last 12 months SCG20 received 5 builds, with at least one new build in 5 different months.
Yes, all firmware files for SCG20 are 100% official, original, and obtained directly from Samsung servers.
To flash SCG20, 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.
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 SCG20.