UPDATES
Galaxy S21 and S23 get December 2024 security update in the US
On the 5th day of the month, Samsung started rolling out the December 2024 security updates to its phones and tablets. The Galaxy S21 and Galaxy S23 series in Europe received this December 2024 security update recently. Now, the update is rolling out to the Galaxy S21 and Galaxy S23 series in the US. Plus, the Galaxy S23 series already received this update in Korea and India.
This firmware could be released in other regions soon.
Galaxy S21 and Galaxy S23 series gets December 2024 security update
The December 2024 update for the locked models of Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra comes bearing firmware version in G99xUSQSEGXK3 in the US. Users of unlocked Samsung Galaxy S23 models are getting this update with the One UI builds version given below.
- Galaxy S23 Ultra: S918U1UES5CXJX
- Galaxy S23+: S916U1UES5CXJX
- Galaxy S23: S911U1UES5CXJX
Users need to download a software package worth 561.38 MB Megabytes to install the latest improvements on their handsets. If you have any of these devices in your hand then you can experience a reliable and bug-free experience.

The December 2024 security patch update addresses around 45 security issues from Google and Samsung. This change in your Galaxy device is made to eliminate unknown bugs present in the device system and settings. Plus, these patches make your smartphone data even more secure, keeping it safe from harmful privacy exploits and malicious threats.
Other than that, the firmware doesn’t count any major changes, But this is the most needed update for your smartphone and you should do it as soon as possible.
If you have received the notification of the latest security patch then follow on-screen instructions to get a bug-free experience. If you don’t get a notification in a couple of days, you can check the update by navigating the Settings and selecting the Software update section. Here, click on the Download and install button.
NEWS
Breaking: Samsung releases One UI 8 Watch update for Galaxy Watch 4 and Galaxy Watch 5 LTE
Samsung has begun rolling out the One UI 8 Watch update for the Galaxy Watch 4, Galaxy Watch 4 Classic, and Galaxy Watch 5 LTE. The One UI 8 Watch update is based on the Wear OS 6.
Note that the stable One UI 8 Watch update is currently available only to Galaxy Watch 4 users in South Korea. The company has not yet provided a timeline for when this update will be available in the global market.
However, the Galaxy Watch 5 LTE is already receiving the One UI 8 Watch update in India. Given the pace of the One UI 8 update rollout, it shouldn’t be long before it becomes widely available.
Galaxy Watch 4, Watch 4 Classic, and Galaxy Watch 5 LTE users can identify the latest software via the PDA build version ending with JYK4 and DYK4, respectively. The firmware also carries the October 2025 security patch. The stable update unlocks even better performance, power efficiency, and stability.

One UI 8 Watch brings a completely new tile system that improves accessibility. This update also optimizes overall performance and battery efficiency with app updates. You can look forward to a whole new world of smartwatch ventures.

To download the update, check for software updates. Your watch may already have an OTA update pending for your approval. Press the download and install button.
UPDATES
Samsung Galaxy Z Flip 6 and Fold 6 get December 2025 security update
Samsung has begun rolling out a new software update with the December 2025 security patch for its last year’s foldables, including the Galaxy Z Flip 6 and Galaxy Z Fold 6. As always, this update improves your phone’s security and performance. Currently, the update is available in Korea, and it will be rolled out to other regions soon.
The December 2025 security patch fixes several critical security vulnerabilities that could affect your phone’s security. These fixes help protect your device from potential threats and ensure its smooth function. This firmware is designed to improve the overall security of your Galaxy Z Flip 6 and Fold 6, making it safer to use.
The December 2025 update fixes several security vulnerabilities to keep your device protected against the latest threats. The Korean tech giant frequently releases these security updates to keep its devices secure and provide a better user experience.
Users of the Samsung Galaxy Z Fold 6 and Galaxy Z Flip 6 can verify the December 2025 security update with One UI build versions F956NKSS2CYKE and F741NKSS2CYKE, respectively.
In addition to security patches, Samsung is also preparing for future updates like One UI 8.5, which will bring new features and design changes to the Galaxy S25 series. This upcoming update will give your Galaxy phone an even better look and improve its functionality.
To get the December 2025 security patch on your Samsung Galaxy Z Flip 6 and Galaxy Z Fold 6, follow these simple steps:
First, go to your Galaxy phone’s Settings >> Tap on Software update >> Select Download and install.
Once the update has been downloaded and installed, your Galaxy phone will be updated with the latest security fixes. Keep checking for regular firmware to keep your phone up-to-date and secure.
NEWS
Galaxy Z Flip 7, Fold 7 models receive December 2025 security update, next could be One UI 8.5 Beta
Samsung has released a new update for the Galaxy Z Flip 7 and Galaxy Z Fold 7 smartphones, which installs the December 2025 security patch update to improve system security and stability. According to reports, the update is already live for users in Korea, and the company will soon release it in other countries as well.
The December 2025 security update for the Samsung Galaxy Z Fold 7 and Galaxy Z Flip 7 smartphones has arrived with One UI build versions F966NKSS6AYKE and F766NKSS6AYKE. This is an initial rollout, so it may take a few hours or days to reach all models.
The December 2025 security patch fixes 57 security vulnerabilities present in the previous version of the OS.
Notably, this update is based on Android 16 and One UI 8. And the device is eligible for One UI 8.5 beta based on Android 16. On December 08, Samsung opened the beta program for the next version of One UI 8.5 only to the Galaxy S25 series. Plus, the Galaxy Z Fold 7 and the Galaxy Z Flip 7 will be the next devices in line.
Although the exact release date hasn’t been revealed yet, it’s expected to be released sometime in December 2025. The company plans to begin the stable rollout of One UI 8.5 with the Galaxy S26 series next year. More users will receive the update shortly afterward.
So, if you are using the Galaxy Z Fold 7 and the Galaxy Z Flip 7 smartphone, install the latest security update now to make your device ready for future updates. The next update could be One UI 8.5 Beta.
To manually check for security updates, go to your phone’s settings. At the bottom, you’ll find the Software Update section; simply open it. In the submenu, if your device receives a new OTA update, you’ll need to tap the Download and Install button.
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