Owners Samsung Galaxy S25 received the first signal about the preparation of the next major software update. On internal Samsung servers appeared test firmware One UI 9.5 for last year’s flagship series. This shows that the company is already working on adapting the new version of the shell not only for future ones Galaxy S26but also for the previous generation of smartphones. Samsung has not yet announced the beta testing program or given a launch date. However, the appearance of internal builds means that the development of the update for the Galaxy S25 is already moving forward. For the owners of these smartphones, this is an important signal regarding further software support for the devices.
Samsung is testing One UI 9.5 on the Galaxy S25
According to information released by SamMobile’s Fahad Ali Jawed, three internal firmware builds for the Galaxy S25 have been spotted on Samsung’s servers. Their numbers:
- S938BXXUDEZKG;
- S938BOXMDEZKG;
- S348BXXUDEZKG.
These are service files, not out-of-the-box updates for regular users. It is not yet possible to install them through standard smartphone settings. However, the appearance of such builds confirms that Samsung is preparing One UI 9.5 for the previous flagship generation. Previously, the first signs of testing the new shell mainly related to the upcoming Galaxy S26 series. Now the situation has changed: development for the Galaxy S25 has also appeared on the company’s internal infrastructure.
Will the bootloader change on the Galaxy S25
There is one more detail in the leak related to the smartphone bootloader. There were earlier reports that the Galaxy S26 could be moving to the version 6 bootloader along with One UI 9.5. However, the firmware numbers found for the Galaxy S25 do not indicate a similar change. This could mean that Samsung will keep the current version of the bootloader for older generation devices. However, it is still too early to draw final conclusions. The internal build numbers alone do not provide complete information about all the system changes, and Samsung has not yet published an official description of One UI 9.5.
When will the Galaxy S25 get One UI 9.5 beta?
Samsung has not yet announced when it will open the One UI 9.5 beta program. According to previous reports, testing of the shell on the Galaxy S26 could begin in the near future. If this timeline holds true, the Galaxy S25 could get beta access in the coming weeks. Early December is mentioned as a possible date, but this is only a preliminary prediction, not a confirmed Samsung plan. It is also not known which countries will be the first to open registration. The availability of Samsung beta programs usually depends on the region and specific device model, so Ukrainian owners of the Galaxy S25 will have to wait for a separate confirmation.
What this means for Galaxy S25 owners
The appearance of One UI 9.5 test firmware shows that Samsung is not limiting the development of the new shell to future flagships only. The Galaxy S25 is also among the devices for which the company is preparing an update. It is not yet known which One UI 9.5 features the previous models will receive and whether there will be any differences between the Galaxy S25 and Galaxy S26. Some features may depend on new generation hardware. Therefore, the main conclusion from the leak is not quick access to new features, but confirmation that Samsung is already working on the next version of the shell for the Galaxy S25. The company has yet to announce the exact dates of beta testing, the list of changes and the stable release schedule.
