Samsung has started rolling out the October Security Patch to the Galaxy S23 Series, including the Galaxy S23, Galaxy S23 Plus, and Galaxy S23 Ultra. The company has already been testing the Android 14-based One UI 6 for a while now, which has already reached the 8th stage. It is expected to go live within the next few months and comes with stability improvements, feature enhancements, and bug fixes to provide a better and error-free experience.

However, the Beta update doesn’t include any new features or changes, but users may notice, after installing the update, that several stock apps have been updated to the latest version, bringing new features and improvements. The update also brings the October 2023 Security Patch to enhance the system security.

What’s new with the Galaxy S23 (SM-S911B) October 2023 Security Update

Samsung has addressed a few vulnerabilities that were discovered in the previous firmware. However, it doesn’t contain any major changes other than backend fixes. The October Security Update SMR (Security Maintenance Release) has a total of 12 Samsung vulnerabilities and exposures (SVE) listed, including 2 critical vulnerabilities, 32 high-level CVEs, and a couple dozen high-risk vulnerabilities. Additionally, there are Android vulnerabilities to improve system security and stability.

  • Galaxy S23 (SM-S911B)
    • CSC S911BOXM3AWH3
  • Galaxy S23 PLUS (SM-S916B)
    • CSC S916BOXM3AWH3
  • Galaxy S23 ULTRA (SM-S918B)
    • CSC S918BOXM3AWH3

While there are other concerns regarding Android OS issues, which have been patched by Google or the vendor of an affected system component, at least two vulnerabilities patched this month are confirmed to be critical flaws.

The company has addressed necessary concerns, including one major issue where a malicious actor could install a different version of an app on a device or initiate code without needing permission, enable and connect to Wi-Fi networks without the user’s permission, execute code remotely, and obtain the CPU serial number by bypassing required permission.

Samsung Galaxy S23 (SM-S911B) October 2023 Changelog

The company has now started updating the October 2023 patch for the Galaxy S23 Series. This update fixes many security holes from the previous update.

A software update can include, but is not limited to:
- Device stability improvements, bug fixes.
- New and / or enhanced features.
- Further improvements to performance.
To get the best from your device, please keep your device up to date and regularly check for software updates.
Learn more at: <>

App updates
After the update, Samsung apps can be updated to the latest available version.
View more

Update information
• One IJI version: 6.0
• Version: S918BXXU3ZWJl / S918BOXM3ZWJl /S918BXXU3BWJl
• Size: 483.14 MB
• Security patch level: I October 2023

Update Galaxy S23 (SM-S911B) October 2023 Update

The update is now available for the Factory-Unlocked Galaxy S23 Series worldwide. This update includes minor software updates weighing around 350MB. The firmware is already available for download and manual installation of the October 2023 Update on the Galaxy S23 Series. You can check for the new update by navigating to Settings > Software Update > Download and Install.

These devices already have the update, but due to server limitations, Samsung has only released the update in limited regions. The latest update may also bring some improvements to your device, enhancing performance and stability of various functions. However, Samsung has stopped releasing updates for certain devices, including the Galaxy Tab S6.

class="wp-block-heading">Update your Galaxy S23 (SM-S911B) to the October build.

Samsung is rolling out the update via OTA; even the carrier-locked version has received the update. You can check for the new update.

  • Open device settings.
  • Go to Software Update.
  • If an update is available, tap Download and Install to upgrade to the latest version.

Download Galaxy S23 (SM-S911B) S911BXXS3AWIG_INS Stock Firmware

Alternatively, you can download and manually flash the firmware on your device. The update comes with firmware version S91xU1UES1AWHD in the US.

Download Samsung Galaxy S23 (SM-S911B) S911BXXS3AWIG_INS Stock Firmware | September 2023 Firmware Update

If you prefer a manual update, you can download the official Samsung Firmware from the button below to upgrade your device using a Windows PC.

Note: We strongly recommend waiting for the OTA (Over-the-Air) update to upgrade to the latest version. Only use manual flashing if you are confident about the risks involved. The AndroidGreek Team will not be responsible for any damage caused by using this file.


Galaxy S23 (SM-S911B)

To use the OTA update, you will receive a notification. If you missed this notification, you could check for the update by going to Device Settings > Software Update. You will likely find a Download and Install button if your device has received the update.

The device will receive more improvements over the update in the coming months. The device will receive monthly security updates for at least three years, and after that, there will be bi-monthly continuing updates for the next 5 years.

How to Flash your Samsung Galaxy S23 (SM-S911B)

So let’s begin, starting with downloading the latest Odin:

  • First, you need to enable USB Debugging. After that, download Odin. | Read Detailed Guide here.
  • Download the S23 Stock Firmware.
  • Now move Odin and the Firmware into the same folder on your PC.
  • After that, extract both files in the same folder.
  • Next, connect your device to your PC using a USB cable, press Volume Up, and then use the Volume Down + Power button to boot your device into Download Mode.
  • Use the Volume Up button to continue, and your Odin will now show an IDCOM ID with blue, indicating that your device is connected.
  • Now add the firmware by browsing the firmware files into the designated slot, like AP in AP, BL in BL, CP in CP, and HOME_CSC in CSC.
  • Don’t tick any other option in the options; the only option you need to beat is F. Rest time and Auto-Reboot in the opportunity.
  • Click on Start, and it will begin flashing.
  • That’s it!

It takes some time to load. After it finishes, click “Start,” and it will begin flashing. Your device will now start Installing the firmware. Finally, on your O