Galaxy M34 third One UI 9.0 (Android 17) beta update is out

TL;DR

Samsung has released the third One UI 9.0 beta for the Galaxy M34 in India, about two weeks after the previous beta.

The 286.36MB update adds the October 2026 security patch and fixes two bugs, including AOD brightness in dark environments.

It also updates SmartMirroring to 8.2.28.22 and Modes and Routines to 5.1.2.13, with no stable release date announced.

Samsung has released the third beta One UI 9.0 (Android 17) beta update for the Galaxy M34. It comes almost two weeks after the second beta update and almost a month after the brand opened the beta program.

The update is live in India, has a size of 286.36MB, carries firmware version M346BXXUEZZJ3, brings four changes, as well as the October 2026 security patch, which fixes 62 security issues (via Mohammed Khatri).

You can check out the official changelog below.

Fixed an issue where AOD brightness does not dim in a dark environment.

Fixed an issue where the screenshot for video wallpaper returns null in the SIM PUK bouncer case.

Updated SmartMirroring app to version 8.2.28.22.

Updated app Modes and Routines to 5.1.2.13.

To get the third One UI 9.0 update on your Galaxy M34, go to Settings > Software update > Check for updates. Needless to say, it is available for devices enrolled in the beta program. At the moment, there's no information on when the company will release the stable build.

Abid Iqbal Shaik - Writer

First Samsung device: Galaxy S II

I’m a computer science engineer living in Hyderabad, India, who has a keen interest in automobiles and consumer electronics. My journalism career kicked off in 2017 with MySmartPrice where I wrote news, features, buying guides, and explanatory articles about technology among other things, and reviewed many products, including smartphones, tablets, laptops, PC components, smartwatches, audio devices, wearables, and smart home products. Since then, I have worked for 91Mobiles, Apple, and Onsitego, before finally landing on SamMobile.

Firmware Phone Android 17 Galaxy M34 India One UI 9.0