Owners of the legendary flagship Samsung Galaxy S9 often wonder what version of the operating system is relevant for their device today. This smartphone, released in early 2018, originally came with Android 8.0 Oreobut has gone through many major interface and security updates over the years. Understanding the current software situation is critical for those who plan to continue using the device or are faced with application compatibility problems.
The evolution of firmware for Galaxy S9 (models SM-G960F and SM-G965F) has officially ended with the version Android 10 with shell One UI 2.5. This means that the official update path from the manufacturer is closed, and upgrading to newer versions such as Android 11 or 12 is only possible through third-party methods that require deep technical knowledge and come with risks. In this article we will analyze in detail the history of updates, ways to check the current version and the nuances of switching to custom firmware.
The history of updates and the final official version
The path Samsung Galaxy S9 through versions Android was quite rich for its time. Immediately after the release, users received a stable experience based on Android 8.0, which was later supplemented with security patches and functions. Android 8.1. This ensured smooth operation of processor Exynos 9810 and optimization of power consumption at the initial stage of the device's life cycle.
A landmark event was the update to Android 9 Pie with the introduction of a proprietary shell One UI. This interface radically changed the ergonomics of the controls, moving the main elements to the bottom of the screen for ease of use with one hand. Later, the device received a final major update to Android 10which added a system-level dark theme, improved gesture controls and new privacy settings.
⚠️ Attention: Official support for security updates for this model has been discontinued. This means that vulnerabilities discovered in the system after 2021 will not be corrected using factory methods.
Currently The final official version is Android 10 (One UI 2.5). Attempts to find an update to Android 11 in the settings menu are doomed to failure, since servers Samsung no longer distribute new packages for this chipset. Users for whom the functions of new versions are critical OSwill have to look for alternative ways that go beyond the manufacturer's warranty policy.
How to check the current firmware version
Before taking any action to change the software, you need to find out exactly what build is installed on your Galaxy S9. This will help avoid version conflicts when attempting a manual update. The easiest way is to use the standard phone settings menu, which is available on any device with a working screen.
To do this, go to the section Settings → About phone → Software information. Here you will see three key parameters: version Android, interface version One UI and the date of the last security update. Write down this data, especially the build number (for example, G960FXXS9CTH1), as you will need it when searching for drivers or firmware in specialized sources.
If the phone menu is inaccessible due to software failures, you can use recovery mode. To do this, turn off the device and hold down the key combination Volume up + Bixby + Power. In the menu that appears, navigation is carried out using the volume buttons, and selection is made using the power button. The top of the screen often displays basic version information about Recovery android, although the detail here is less than in the system.
Write down the full build number before any manipulations. You will need it if you want to return to factory settings through the Odin app.
Instructions for updating via Samsung Smart Switch
If your device has not yet been updated to the latest available version Android 10, the safest way is to use a proprietary utility Samsung Smart Switch for PC. This method minimizes the risk of bootloader damage and allows you to save the user's personal data, unlike some manual flashing methods.
First, download and install the app Smart Switch on a computer running Windows or macOS. Connect Galaxy S9 to the PC using the original USB cable. Make sure that USB debugging or file transfer mode is enabled on your smartphone, although the app usually requests the necessary permissions on the phone screen.
After connecting the devices, the app will scan your device and compare the installed version with the latest one available on the servers. If an update is found, an Update button will appear. Click it and follow the on-screen instructions. The process will take from 15 to 40 minutes depending on the Internet speed and computer power.
☑️ Preparing for the update via PC
During the process, do not under any circumstances disconnect the cable or turn off the computer. Interrupting data recording to flash memory may result in the phone turning into a “brick” and requiring complex recovery through the Download Modemode. Wait until the progress bar completes and the device automatically reboots.
Compatibility table of versions and functions
Different versions Android bring not only changes in the build number, but also significant differences in functionality. Some applications no longer support older OS versions, while new features may require a certain level of API. Below is a comparative table of capabilities for different stages of life Samsung Galaxy S9.
| Android version | Shell | Key features | Support status |
|---|---|---|---|
| 8.0 / 8.1 | Samsung Experience | Classic interface, stability | Outdated |
| 9.0 | One UI 1.x | One-handed comfort, dark theme | Limited |
| 10 | One UI 2.5 | Gestures, privacy, Digital Wellbeing | Final |
As seen from tables, the transition from Samsung Experience to One UI became the most significant change. The version One UI 2.5 based on Android 10 remains the most balanced for this hardware, providing good performance and compatibility with most modern banking applications and instant messengers.
Why is Android 11 not officially released?
Hardware limitations of the Exynos processor 9810 and Samsung's policy limiting flagship support to two major OS updates.
Custom firmware: risks and opportunities
For enthusiasts who don't have enough Android 10, there is a way to install custom firmware (Custom ROM). The developer community, in particular the forum, has created ports of other systems based on Android 11, 12 and even newer for the model. However, this process requires unlocking the bootloader, which entails irreversible consequences. First, a counter is triggered, which permanently blocks the operation of secure functions such as Samsung Pay, Secure Folder and some banking applications. Secondly, you lose the official warranty, if it was still valid. XDA Developers, created ports LineageOS, Pixel Experience and other systems based on Android 11, 12 and even newer for the model Galaxy S9.
However, this process requires unlocking the bootloader, which entails irreversible consequences. First, the counter is triggered Knox, which permanently blocks secure features such as Samsung Pay, Secure Folder and some banking applications. Secondly, you lose the official guarantee, if it was still valid.
⚠️ Attention: Installation of unofficial software is done at your own peril and risk. An error in the steps can lead to complete inoperability of the device without the possibility of recovery using standard methods.
The installation process usually includes obtaining root access, installing a custom recovery (for example, TWRP) and downloading a system image. Before you start, be sure to make a full backup copy of your data (NANDroid backup), since the internal memory will be completely cleared during the formatting of the partitions.
Custom firmware can bring life back to the old device, but at the cost of losing the warranty and security of Samsung branded services.
Frequent problems after the update and their solution
Even an official update to Android 10 can cause a number of unpleasant symptoms on Samsung Galaxy S9. Users often complain about rapid battery drain, case heating and interface sluggishness in the first days after installation. This is due to the process of optimizing the application cache and rebuilding the media database.
If the problem with autonomy does not go away after 3-4 days, it is recommended to reset the settings to factory settings. This can be done through the menu Settings → General management → Reset → Reset data. Before doing this, be sure to save important photos and contacts to the cloud or to your computer, as all data will be deleted.
Another common problem is incorrect operation of Bluetooth or Wi-Fi after the update. In such cases, resetting the network settings helps. Go to Settings → General management → Reset → Reset network settings. This action will not delete your personal files, but will forget saved Wi-Fi passwords and paired devices.
- 🔋 Quick discharge: often treated by deleting the cache of the Wipe Cache Partition via Recovery.
- 📶 Communication problems: check if the "4G Only" mode is enabled in the hidden testing menu.
- 🐌 Interface slowdowns: turn off window animation in the "For Developers" menu.
Sometimes after the update, fingerprints or facial recognition stop working. In this case, delete the old biometric data and register it again. If the problem persists, you may need to flash the modem separately from the main system, which is a procedure for advanced users.
FAQ: Frequently Asked Questions
Is it possible to officially update the Samsung Galaxy S9 to Android 11?
No, official support has ended with Android 10. Any suggestions to update up to 11 or 12 are unofficial (custom firmware) and require unlocking the bootloader.
Why did the phone start to heat up after the update?
In the first 48 hours after a major update, the system indexes files and optimizes applications in the background. This is fine. If heating persists for more than a week, try resetting the settings to factory settings.
Will banking applications work on custom firmware?
Most likely not. Unlocking the bootloader activates the Knox flag, which blocks Samsung Pay and many banking apps from working for security reasons. Getting around this is difficult and unreliable.
How to return to an old version of Android if you don’t like the new one?
You can only return using the Odin app and Stock Firmware for your model and region. Download the firmware from a trusted resource (for example, SamMobile or SamFw) and follow the firmware instructions through the Download mode.