Samsung Galaxy S25 Ultra S938BXXU1AYB4 Firmware
Samsung Galaxy S25 Ultra S938BXXU1AYB4 is an Android 15 firmware for 56 countries, 101 CSC codes. It is the same firmware configured per region and carrier (CSC). Find your country below, verify the file and download for free. Compared with the previous build S938BXXU1AYA1, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-S938B is available: S938BXXSDDZJ1.
Bootloader binary 1. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.
All regional downloads
Pick your region (CSC) to download the matching firmware package.
No matching downloads
Device specifications
- Launched withAndroid 15
- Display diagonal17.5 cm (6.9")
- Display resolution3120 x 1440 pixels
- Processor frequency3.5 GHz
- Processor familySnapdragon
- Processor model8 Elite
- RAM12 GB
- Rear camera resolution200 MP
- Rear camera typeQuad camera
- SIM cardsDual SIM
- Battery capacity5000 mAh
- Weight218 g
What's new in S938BXXU1AYB4
• Overall stability of functions improved.
• The security of your device has been improved.
How to flash S938BXXU1AYB4
- Install Samsung USB Drivers:Download Official Drivers
- Download Odin Flash Tool:
- S938BXXU1AYB4 has bootloader binary 1. Your device must run binary 1 or lower: it is the 5th character from the end of your current build number.
- CSC: Use CSC for a clean install, to change the region (CSC code), to downgrade or to repair a device that does not boot.
- HOME_CSC: Use HOME_CSC to update the same model and region while keeping your data. Back up anyway: a failed update can still require a reset.
- The Download Mode key combo depends on the model: see all combos.
Frequently Asked Questions
Other builds and changelog for Samsung Galaxy S25 Ultra
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
Enhanced Now nudge
Now nudge provides helpful suggestions in more places throughout your Galaxy experience. In addition to the keyboard, suggestions will now appear in conversation notifications and in a floating button in the bottom right corner of the screen. There are also several new types of suggestions, like entering reservation details or addresses and saving places in Google Maps.
Focus on someone important
My FanCam lets you select a person in a video and follow...
• 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.
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
Show 15 older builds
• Stability and reliability
Device behavior has been improved.
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
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...
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...
• 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.
• 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.
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
• 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.
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.
Clean up sound
Use Audio eraser to automatica...