The matter remains unknown that whch Lollipop upgrade is actually causing the problem. But the users claim that their devices have gone haywire and stopped working after it was updated to Android 5.0.2.
The Google Nexus 7 is always reprted to be one of the most commonly affected devices as far as WiFi is concerned.
Despite the fact that a lot of users have complained regarding the same in forums but Google and Asus seem to be doing nothing about it.
While some users are hopeful that Asus is ready to help and will fix the devices out of warranty on the other hand Google shows no interest at all.
The real cause of the problem still remains unknown but the problem might be with the phone's internal hardware.
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For the Nexus 5, users have reported that the Android 5.0.1 Lollipop update caused the issue. The number of users reporting this is less and it is again possible that the hardware is causing the problem.
Google started rolling out the latest Android 5.1 Lollipop for its Nexus series of devices - the Nexus 6, Nexus 7 2012 Wi-Fi, Nexus 9, Nexus 10, and Nexus 5 - in March. As of now, no other Nexus users have reported the bricking issue apart from these two Nexus models.