Samsung typically sticks to a strict schedule of one security update per month for its supported devices. However, April 2026 has brought an unexpected twist, with several Galaxy models receiving a rare second update within just a few weeks.

This latest rollout primarily targets carrier-locked versions of the Galaxy S26, S25, Z Fold 5, and Z Flip 5 in the US market.

Interestingly, while Samsung's release notes label this as the latest Android security update, the devices remain on the April 2026 security patch rather than advancing to a newer one. This suggests the tech giant might be quietly squashing severe bugs or patching critical vulnerabilities that were negatively impacting the user experience.

Here is the list of the new firmware versions:

  • Galaxy S26 Ultra: S948USQS2AZDG

  • Galaxy S26+: S947USQS2AZDG

  • Galaxy S26: S942USQS2AZDG

  • Galaxy S25 Ultra: S938USQS9BZCL

  • Galaxy S25+: S936USQS9BZCL

  • Galaxy S25: S931USQS9BZCL

  • Galaxy S25 Edge: S937USQS6BZCL

  • Galaxy Z Fold 5: F946USQS7FZC5

  • Galaxy Z Flip 5: F731USQS7FZC5

Samsung has yet to release specific details regarding the changes included in this update. However, dropping a supplemental patch within the same month usually indicates high-priority issues that demand immediate attention, particularly for flagship devices.

Users of the aforementioned devices can check for the update by navigating to Settings > Software update > Download and install.