Aptivi

Galaxy Watch4, Watch5, Watch6, and Watch FE receive the May 2026 security patch update

Samsung distributed the February 2026 update to the Galaxy Watch6, Watch5, Watch FE, and Watch4 series, which came after the One UI 8 Watch update that was released last November. Since then, Samsung started rolling out the May 2026 security patch update that makes your Galaxy smartwatch more secure.

This was done on a quarterly basis according to the security patch rollout timeline that you can read here. This update only provides security fixes to your Galaxy smartwatch.

Currently, this update is only available in Korea, but the rollout should commence worldwide as early as next week to ensure that your Galaxy smartwatch becomes more secure. The update size is fairly small at almost 150 MB.

Source

The firmware build information for this update is found below:

  • SM-R960: R960XXS2CZE1 [KOO]
  • SM-R950: R950XXS2CZE1 [KOO]
  • SM-R940: R940XXS2CZE1 [KOO]
  • SM-R930: R930XXS2CZE1 [KOO]
  • SM-R920: R920XXS2DZE1 [KOO]
  • SM-R910: R910XXS2DZE1 [KOO]
  • SM-R900: R900XXS2DZE1 [KOO]
  • SM-R890: R890XXS2JZE1 [KOO]
  • SM-R880: R880XXS2JZE1 [KOO]
  • SM-R870: R870XXS2JZE1 [KOO]
  • SM-R860: R860XXS2JZE1 [KOO]
  • SM-R861: R861XXS2CZE1 [KOO]

To obtain the update, follow these steps:

  • Open the Wearable app
  • Navigate to Watch settings > Watch software update
  • Tap on Download and Install
  • You should be able to see the update information. Verify the version with your device model posted above.
  • Click on Download, let it download, and click on Install. Make sure that you download the update through Wi-Fi.

    • This update should take a short time to install. Make sure that you have the watch charged fully before initiating the update process to avoid interruptions. Back up your data in case the update went wrong. Don’t interrupt the update process, or you’ll experience problems later.

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    Jun 16 at 9:34amWeb