The ‘seamless update’, first brought back in 2016 and released on every Google Pixel phone, allows firmware updates to be installed in a secondary partition while the phone remains in use. This eliminates the downtime between firmware updates for a reboot, after which the secondary partition becomes the main one and the update is already complete. It also acts as a failure if an update goes wrong – the system may fall back to the previous partition.
Update notifications on Samsung Galaxy S21 Ultra
Google no longer supports this requirement in Android CDD (Compatibility Definition Document). CDD serves as a guideline for Android OEMs and lists what Google needs from OEMs for its devices to be compatible with the latest version of Android.
The requirement was supported by OEM pressures such as Samsung, which do not have the framework to support seamless updates to the latest smartphones from the Galaxy S21. Android police Has confirmed that the new Samsung Galaxy S21 Ultra does not support the feature. While Google previously planned to require this feature, it is now mentioned in CDD that OEMs “SHOULD” support a / system update. “A” and “B” refer to similar updates that alternate between firmware updates.
Without intuitive updates, the ability to use any application or make any phone calls, an Android device would need to spend several minutes of downtime on the bootloader screen, even the emergency type. Samsung’s rationale for delaying such a feature is unknown.
Source • Via