Google Resume on Reboot Feature Aims to Make OTA Updates Faster
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Google is currently working on a new feature called Resume on Reboot, which will let you use your device without keying in your login credentials after an OTA update. Generally, there are two ways in which Android users can install OTA updates on their device. First, for devices that don’t have an A/B dual partition, the OTA update package is downloaded to the device’s cache, following which the device reboots into recovery and the OTA update package is flashed through recovery.
The feature was spotted on the Android Gerrit, and according to the description of the AOSP commit, the recovery system will be able to securely store the user's lock screen knowledge factor when an OTA is downloaded. Since the feature requires an HAL called IRebootEscrow, it will not be available on every device. Hence, it will most likely work on devices following a future Android 10 update, or perhaps as late as Android 11.