Samsung Testing March 2026 Update for Galaxy S26 Ultra

Madhav BiradarMarch 4, 2026

After the launch of the Galaxy S26 Ultra with One UI 8.5 software, Samsung is now working on its next monthly firmware update. The latest build spotted on the test server shows that Samsung will soon release the March 2026 security patch for the Galaxy S26, Galaxy S26 Plus, and Galaxy S26 Ultra smartphones.

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Galaxy S26 Ultra March 2026 Firmware

The firmware version found on the Samsung test server is S948BXXU1AZC3, where the second-to-last letter is assigned to this month. Interestingly, the Galaxy S26 Ultra has yet to reach the hands of users, and when they receive it, the first thing they may see is the newest March security patch.

Expected Changes in Galaxy S26 Ultra March Update

In the new firmware, Samsung is expected to focus on app optimization, battery improvements, system stability, and early bug fixes (67 vulnerabilities from the previous code). Users who received early handsets have acknowledged some issues with battery, camera settings, document scanning, Samsung fonts, and animations, which Samsung could fix in the next software update.

When Will Galaxy S26 Series Receive the Update?

There is no specific release date for the Galaxy S26 series March update. The handset will officially go on sale from March 11 in major countries, so we expect the update to arrive in the next few days or weeks.

To know more about Galaxy S26, S26+, and Galaxy S26 Ultra firmware updates, you can follow our dedicated tracker page.

Source: Twitter

Written by

Madhav Biradar

Madhav Biradar is the Lead Software Analyst and Founder of Galaxy Updates. With over 13 years of experience tracking the evolution of Samsung’s ecosystem—from the early days of Tizen OS to the latest One UI Build & releases — specializes in firmware deconstruction and beta-cycle analysis. Based in India, he has personally tested every flagship Galaxy device & wearables since the Galaxy S2, providing readers with hands-on insights that go beyond standard spec sheets. Expertise: One UI Updates, firmware leaks, Samsung Firmware Deployment, Galaxy Ecosystem Integration, wearables, etc.