Well, few of us are still waiting for Android 5.0 Lollipop on our devices but there are some devices, better known with the name Nexus, are getting the Android 5.0.2 update. Particularly, OG Nexus 7 is getting the Android 5.0.2 Lollipop update.
Google has made update available via OTA and even the Factory Images are available for the OG Nexus 7. The build number of the update is LRX22G and the update will fix an issue that the tablet has with storage, and another issue that deals with the alarm on the slate.
In case you got stuck while doing experiment with your device, then you can flash the factory image from the source link below after downloading it. Even if you didn’t received Android 5.0.2 update and can’t wait for the OTA update you can also flash the Android 5.0.2 factory image.