Samsung and Google are usually among the first two companies to update their flagship phones to the latest monthly security patch. While Google took its time, it rolled out the November update for compatible Pixel phones alongside a surprise Feature Drop in the second week of the month. Samsung, meanwhile, is running later than usual and is only now rolling out the update for the Galaxy S25 lineup.
The Galaxy S25’s BYK3 firmware containing the November 2025 security patch is currently live in Europe, Australia, the Middle East, and India. The 569MB build only patches security vulnerabilities and doesn’t bring any other changes.
Samsung has already published its November security bulletin, outlining fixes for two critical and several high-risk vulnerabilities.
If you own a Galaxy S25, navigate to Settings > Software update > Download and install to grab the OTA build.
For now, the firmware is yet to go live in the United States, but this should change sooner rather than later.
One UI 8.5 beta is around the corner
Unlike other Android phones, Samsung released the stable Android 16 build with One UI 8 for the Galaxy S25 in September itself. So, the next major update for the phone is at least a few months away now.
Still, if previous reports are correct, the company should soon kick-start a One UI 8.5 beta program for its current flagship phone in a handful of markets. While the skin will only go official with the S26 series next year, Samsung will start publicly beta testing it this year itself.
The beta program was apparently slated to go live in late November, but those plans seem to have run into a snag. The beta program could now start in December or January.
Based on all leaked One UI 8.5 firmware so far, it’s clearly shaping up to be a bigger upgrade than One UI 8. Besides UI tweaks, it could debut new Galaxy AI features, more Now Bar improvements, and might even become the first Android skin to be based on the latest Quarterly Platform Release.
