Quick answer: Samsung started rolling out stable One UI 9 (Android 17) to the Galaxy S24, S24+, S24 Ultra, Z Fold 6 and Z Flip 6 in South Korea on October 6, 2026. Reports say other countries follow from October 12, but Samsung hasn’t confirmed that date yet.
The wait is almost over if you own a Galaxy S24. Stable One UI 9 has landed on the first phones.
It is a Korea-only start for now, so most of you will still see “Your software is up to date” today. Here is what I know and what it means for your phone.
Which phones are getting One UI 9 first
According to Sammy Fans, the first wave covers the Galaxy S24, S24+ and S24 Ultra. The Galaxy Z Fold 6 and Z Flip 6 are in the same wave.
As usual, Samsung is pushing it to Beta Program participants first. If you joined the One UI 9 beta, you are the most likely to see a prompt in Korea right now.
Build number, size and patch level
Screenshots shared by Korean users show a build ending in EZIF (the S92x series with the NKSU prefix). The security patch on it is September 2026.
The download size depends on where you are coming from. Reports put the package at roughly 480MB for people already on the beta. If you are on stable One UI 8.5, expect something much bigger, around 3.8GB according to the same coverage.
Sources differ a little on the exact numbers, so treat these as ballpark figures until the update reaches your region. If you want to read the letters in your own build, my guide on Samsung firmware versions breaks down every character.
When will you get it outside Korea?
This is the part most of you care about. The same report says users outside Korea should expect the stable update starting October 12, 2026.
Keep in mind that this is a report, not an official Samsung announcement. I couldn’t find a Samsung post confirming the date, so I wouldn’t plan around it. Rollouts also go country by country and carrier by carrier, which means your exact day can be later than Oct 12.
There’s more. I already covered the expected timeline in my Galaxy S24 One UI 9 stable release date post, and the live table in the One UI 9 update tracker will show new countries as they appear.
What changes with One UI 9 on the S24
The most visible change in the reports is the Quick Panel. You can now resize the brightness slider, the volume slider and the media player separately, and the Display Mode and Sound Mode toggles are split away from the sliders.
Other coverage mentions more Galaxy AI features and Samsung Health updates. I haven’t tested the build myself, so I’ll keep this part short until I see it on a real S24.
The S24 launched with Android 14 and One UI 6.1, and Samsung promised seven years of OS upgrades for it. One UI 9 sits right in the middle of that promise. My post on the Samsung update policy explains how that works.
What to do before the update arrives
A few things are worth doing today, so you are ready when the prompt shows up.
- Back up your phone. I wrote a full walkthrough on backing up your Galaxy before One UI 9.
- Free up storage. I’d keep 5GB or more free, because the big package needs room to unpack.
- Charge the phone above 50% and connect to Wi-Fi.
- Go to Settings > Software update > Download and install to check manually.
If nothing shows up, don’t panic. Read why the One UI 9 update isn’t showing before you try anything drastic.
FAQ
Is One UI 9 stable out for the Galaxy S24 worldwide?
No. As of October 9, 2026, it has started in South Korea only. Reports point to October 12 for other countries, but that is not confirmed by Samsung.
Does the Galaxy Z Fold 6 get it too?
Yes. The Z Fold 6 and Z Flip 6 are in the same first wave in South Korea.
How big is the update?
Around 480MB for beta users and about 3.8GB if you are coming from stable One UI 8.5, based on early reports.
Can I install it before it reaches my country?
You can sideload firmware with tools like Odin, but I don’t recommend it for most people. Waiting a few days is safer. If you really want to do it, read my Odin guide first.
Final Words
That’s the S24 story so far. A Korean start, a build ending in EZIF, and a reported October 12 date for everyone else.
Which phone do you have and which country are you in? Tell me in the comments and I’ll update this post as soon as your region gets the update.
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