Hot answers tagged nexus-7
The place you've already linked is where the downloads will show up first. Normally OTA updates are staged-rollout, meaning you'll have to wait until your device/region is eligible to receive the update unfortunately.
When doing updates, be it from OTA or flashing, you will need to wipe/clean the cache and dalvik-cache (They retain information that could cause problems as well as bootloops.) Just remember to leave system, data, and other partitions alone.
Sounds like they just replaced the device and gave you a new/refurbished one. Your original device will be fixed (if possible), and then it will be wiped and turned into a refurbished unit. If you didn't back up any of your data, it is gone. Hopefully you did; I'm pretty sure anytime you send in a device for service, they warn you that it could be ...
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