Samsung Galaxy S25 S931USQS7BYLR Firmware
Samsung Galaxy S25 S931USQS7BYLR is an Android 16 firmware for 5 countries, 12 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 S931USQS7BYJ9 https://samfirm.shop/build/S931USQS7BYJ9: security patch 2026-01-01 instead of 2025-12-01. A newer build for SM-S931U is available: S931USQSDDZJ1 https://samfirm.shop/build/S931USQSDDZJ1.
Bootloader binary 7. 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
How to flash S931USQS7BYLR
- Install Samsung USB Drivers:Download Official Drivers
- Download Odin Flash Tool:
- S931USQS7BYLR has bootloader binary 7. Your device must run binary 7 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.
What's new in S931USQS7BYLR
• 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 patch: January 2026
SMR Jan-2026 fixes 32 vulnerabilities, 2 of them critical. Android Security Bulletin: 21, Samsung Semiconductor: 4, Samsung-specific issues (SVE): 7.
Most severe Samsung fixes:
- high Improper input validation in SecSettings prior to SMR Jan-2026 Release 1 allows local attacker to access file with system privilege. User interaction is required for triggering this vulnerability. (CVE-2026-20969)
- high Use After Free in PROCA driver prior to SMR Jan-2026 Release 1 allows local attackers to potentially execute arbitrary code. (CVE-2026-20971)
- high Out-of-bounds read in libimagecodec.quram.so prior to SMR Jan-2026 Release 1 allows remote attacker to access out-of-bounds memory. (CVE-2026-20973)
Rollout of S931USQS7BYLR by region
- First release
- January 19, 2026
- Last region
- January 20, 2026
- Duration
- 2 days
- Regions
- 12
- Day 1 · · 8 regionsUnited StatesAIOATTTMBTMKXAADSADSGDSH
- Day 2 · · 4 regionsUnited StatesCCTUSCVZWCHA
Device specifications
- Launched withAndroid 15
- Display diagonal15.8 cm (6.2")
- Display resolution2340 x 1080 pixels
- RAM12 GB
- Rear camera resolution50 MP
- Rear camera typeTriple camera
- Battery capacity4000 mAh
- Weight162 g
Specifications of SM-S931B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.
Frequently Asked Questions
Other builds and changelog for Samsung Galaxy S25
• 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.
- S931USQSCCZF9Sep 1, 2026
- S931USQSBCZF5Jul 15, 2026
- S931USQUACZF1Jun 15, 2026
- S931USQSACZE1May 26, 2026
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.
- S931USQS9BZCLApr 28, 2026
- S931USQS9BZBHApr 7, 2026
- S931USQS8BZBBMar 24, 2026
- S931USQS8BYLXFeb 26, 2026
- S931USQS7BYLRJan 15, 2026
- S931USQS7BYJ9Dec 12, 2025
- S931USQS7BYJ5Nov 21, 2025
- S931USQS6BYIFOct 22, 2025
Show 5 older builds
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...
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
- S931USQS5AYH2Aug 19, 2025
- S931USQS5AYE7Jul 17, 2025
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
- S931USQS4AYE4Jun 12, 2025
- S931USQS4AYE3Jun 13, 2025