Google has released a factory image of Android 5.0.2 for Nexus 7 (2012) Wi-Fi-version. This update addresses some issues detected in Android 5.0.
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The Factory Image (LRX22G) for Android 5.0.2 is only available for the old Nexus 7 2012 Wi-Fi model. This update is for bug fixes, because there has been no Nexus 7 firmware update for Android 5.0.1. Some users are reporting heavy performance issues with Nexus 7 (2012) after updating to Lollipop (Android 5.0). The reason is the slow NAND memory chips included in Nexus 7 (2013). Some users are reporting, that a factory wipe and uninstalling some apps improved performance.
As reported here, the Nexus 7 LRX21P-Android 5.0 ROM contains a bug, that causes trouble. Fstrim, introduced in Android 4.3, is causing trouble under Lollipop. A log posted from xda member cybojenix shows fstrim start issues on devices, that has been shutdown during the night.
Xda-developers reports, some bug fixes in Android 5.0.2 will addresses the NAND issues on Nexus 7. So perhaps Android 5.0.2 will provides a performance boost for Nexus 7 2012. Update: This posting on Google+ quotes, that updating to Android 5.0.2 doesn't improve too much on performance.
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