A/B software updates ensure seamless transitions, minimise downtime and provide a fail-safe rollback option in case of issues.

The process of updating an Android smartphone with the latest firmware can vary from one device to another. Most brands follow a conventional approach where updates are installed only after a reboot. However, some devices, including the latest Galaxy S25 series, have adopted advanced A/B or seamless updates, significantly reducing installation time and minimising risks.

What are A/B updates and how do they work?

This new method of flashing the latest software version involves two partitions, A and B, allowing the device to switch between them during the software installation process. This method not only enhances the updating experience but also acts as a safety net, ensuring that the device remains operational even while an update is being installed.