Samsung appears to be preparing a sixth One UI 9 beta build for the Galaxy S26 series, with the firmware identifier S948BXXU4ZZHB reported by @tarunvats33. This follows the fifth One UI 9.0 beta, released earlier this week for the Galaxy S26, Galaxy S26+ and Galaxy S26 Ultra.
The fifth beta focused primarily on bug fixes, addressing six issues identified after the prior release. There has been a steady stream of One UI 9 beta updates for the Galaxy S26 lineup over the past couple of months.
One UI 9 beta progress for Galaxy S26
The appearance of S948BXXU4ZZHB would align with earlier expectations of one final beta firmware release ahead of a stable rollout. The stable One UI 9.0 release should not be far off, noting that Samsung has already shipped several devices with the stable version out of the box: the Galaxy Z Fold 8, Galaxy Z Fold 8 Ultra and the Galaxy Z Flip 8.
If the sixth build is confirmed, it would likely serve as the last beta step before Samsung begins broader distribution of the stable One UI 9.0 for the Galaxy S26 series.
