One UI 9 stable hits Galaxy S25, Z Fold 7, Z Flip 7 in Korea
Samsung's stable One UI 9 update is rolling out to Galaxy S25, S25 Plus, S25 Ultra, Z Fold 7 and Z Flip 7 in Korea, with the September 2026 patch.
Samsung has begun expanding the stable One UI 9 rollout to the Galaxy S25 series, Galaxy Z Fold 7, and Galaxy Z Flip 7 in Korea. The three S25 models — Galaxy S25, S25 Plus, and S25 Ultra — receive firmware version S93xNKSUCDZIF.
Download sizes vary by starting point. Beta testers get a roughly 535MB package, while users upgrading from One UI 8.5 face a much larger download. A Galaxy S25 Ultra screenshot shows the stable build weighing 3,851.56MB.
The Galaxy Z Fold 7 update weighs 534.56MB and carries firmware version F966NKSUCCZIH. The update screens list the September 5, 2026 security patch, and the beta-to-stable package includes a notice that the One UI 9 beta program has ended.
The Fold 7 and Flip 7 entered the One UI 9 beta program earlier this month alongside the Galaxy S25 series. Samsung had previously confirmed these devices would be among the next models to receive One UI 9 after the Galaxy S26 family.
Stable One UI updates typically begin in South Korea before rolling out globally. The US is part of the beta testing regions, so the update should arrive there sooner rather than later. Samsung has not yet updated its Korean software update pages for these devices with the new stable firmware details.
Quick answers
Which devices are getting stable One UI 9 in Korea?
The Galaxy S25, S25 Plus, S25 Ultra, Galaxy Z Fold 7, and Galaxy Z Flip 7.
What firmware versions are rolling out?
The Galaxy S25 series gets S93xNKSUCDZIF, and the Galaxy Z Fold 7 gets F966NKSUCCZIH.
How big is the One UI 9 update?
Beta testers get roughly 535MB, while users coming from One UI 8.5 get a much larger package. A Galaxy S25 Ultra screenshot shows 3,851.56MB, and the Fold 7 update weighs 534.56MB.