Galaxy S25 Ultra & S24 Ultra Get October Security Update in Thailand!

[Ankitastic26]

Samsung has started rolling out the latest October 2025 security update for the Galaxy S25 Ultra and Galaxy S24 Ultra in Thailand. The update is based on One UI 8 and Android 16 and brings improved security and system stability. Here are the confirmed details from the firmware screenshots:

✅ Galaxy S24 Ultra – Update Information

• One UI Version: 8.0

• Android Version: 16

• Firmware Version: S928BXXS4CYJ1 / S928BODM4CYJ1 / S928BXXS4CYJ1

• Security Patch Level: 1 October 2025

• Update Size: ~455 MB

• Region: Thailand (THL)

✅ Galaxy S25 Ultra – Update Information

• One UI Version: 8.0

• Android Version: 16

• Firmware Version: S938BXXS6BYIF / S938BOXM6BYIF / S938BXXS6BYIF

• Security Patch Level: 1 October 2025

• Update Size: ~561 MB

• Region: Thailand (THL)

More regions, including India, are expected to receive the same update in the coming days as part of the phased rollout.

S25 Ultra

S24 Ultra

[SachinS25Ultra]

Thanks for informing. Hope it will be available, soon, for Indian users 🙏

[Ankitastic26]

You're welcome! Yes, the build should start rolling out in India very soon. Once it arrives, I’ll update the post again. Thanks for checking in!

[SachinS25Ultra]

Please do. I really like your smart and friendly gesture.I have started following you to remain technically updated, sir.

[Ankitastic26]

Thank you so much! I really appreciate your support. I’ll keep sharing every update as soon as I spot it, so you’ll always stay informed. 😊

[Joyboi]

I received the update on my middle east version of S25 Ultra... But I am not sure if it safe to download.... Should I update it.?

[Ankitastic26]

I also received this update on my Indian variant of the Galaxy S25 Ultra around 2–3 days ago. I installed it and it’s been more than a day since the installation was completed. So far, I haven’t found any issues. In fact, I’ve noticed a little improvement in battery optimization and performance after this update.

So yes, you can safely download and install the update on your device. Just make sure your phone is not warm during installation. If it feels hot, let it cool down first, then start the update. Once the download and installation are complete, give your phone a few minutes to finish background optimization before using it normally. 👍