Android Nougat Seamless Updates Explained
Android Nougat's Seamless Updates: A Revolution in OS Updates
Historically, Android operating system updates, spanning all versions up to and including Marshmallow, followed a consistent procedure. The update file would be downloaded, followed by a device reboot, and then the update process would commence.
This traditional method resulted in a period of device unavailability. Users were unable to utilize their phones until the update installation was completely finished.
Introducing a New Approach
The introduction of Android Nougat brought a significant change with the implementation of “Seamless Updates.” This innovative system fundamentally alters the way updates are handled.
With Seamless Updates, the previous update model is no longer in effect. The update process is designed to minimize disruption to the user experience.
How Seamless Updates Work
Seamless Updates function by applying updates in the background. This means the phone can remain operational during a significant portion of the update process.
The system utilizes a dual-partition setup, allowing it to switch between the current running system and the updated system. This enables a smoother and less intrusive update experience.
Key benefits include reduced downtime and the ability to continue using your device while the update is being applied.
This represents a substantial improvement over the older update methodology, offering a more convenient and efficient experience for Android users.
Changes in Android 7.0 Nougat Updates
Google has adopted a new update approach, drawing inspiration from its Chrome OS. Chromebooks have consistently utilized a system where updates download in the background. Subsequently, users are prompted to reboot to finalize the installation.
This process is remarkably swift, requiring only a single reboot to complete the update. There’s no prolonged waiting for installation or optimization phases, resulting in minimal downtime.
With Android 7.0, updates are evolving in this direction. It’s important to note that this change won’t affect devices updated to Nougat. It will only apply to devices that initially ship with the software.
This is due to a technical requirement: the new method necessitates two system partitions. Most existing Android phones currently have only one. Attempting to re-partition a device during operation carries significant risk, making Google’s decision to avoid this on current devices a prudent one.
How the New System Works
The system utilizes an active and a dormant system partition, functioning as mirror images of each other. When an Over-The-Air (OTA) update is available, it downloads to the active partition and then updates the dormant one.
A subsequent reboot switches the dormant partition to active status, while the previously active partition becomes dormant, effectively installing the updated software.
This method not only dramatically accelerates the update process but also provides a built-in backup mechanism. If an error occurs during the update, the system can detect it during boot.
It can then revert to the unaffected system partition. Following this, the system will re-download the update and reboot again to finalize the installation.
This contrasts sharply with current update failure handling, which often demands substantial user intervention, Android development tools, and command-line expertise. The dual-partition method represents a significant improvement.
- Faster Updates: Updates complete with a single reboot.
- Improved Reliability: A backup partition safeguards against failed updates.
- Simplified Process: Reduces user interaction and technical knowledge needed.
The new update system in Android 7.0 Nougat offers a more efficient and reliable experience for users. It represents a substantial step forward in Android’s update methodology.
Uncertainties Remain as Practical Implementation Awaits
Naturally, the introduction of this system raises several questions and potential concerns. While the theoretical framework is understood, its actual performance remains unverified, as the Nougat update hasn't been deployed and no devices currently ship with Android 7.0. Predictions are inevitable, but it’s reasonable to anticipate a noticeable impact on system performance during update application.
Furthermore, the question of storage space required by the dual system partitions is a valid one. A doubling of space usage might be initially assumed, and this isn’t entirely inaccurate. However, it’s important to recognize these are system partitions, meaning a complete duplication of all installed applications isn’t necessary. Nevertheless, devices currently utilizing one gigabyte for the Android OS could potentially require two gigabytes, or even more.
Google’s adoption of the SquashFS file system may mitigate these space concerns. SquashFS is a highly compressed, read-only file system initially created for embedded systems with limited memory. This implementation should help counterbalance the increased storage demands of the two-partition setup. Consequently, we might observe a trend towards devices shipping with a minimum of 32GB of storage.
The fate of the inactive partition following an update is also currently unknown. It’s plausible that it could be updated in the background, preparing for the next over-the-air (OTA) update. However, this remains speculative, lacking official technical documentation. This approach seems logical, as a one-time update would contradict Google’s objective of providing a more seamless and continuous update experience.
As no devices currently support the Seamless Update system, definitive answers remain elusive. A clearer understanding will emerge with the release of new phone generations and real-world testing. However, based on current information, the system appears to be a positive development.