New answers tagged nexus-7
With the TASEMNICE port for Nexus 7 LTE it will work.
Try adding the PPA and installing from that: sudo add-apt-repository ppa:ubuntu-sdk-team/ppa && sudo apt-get update && sudo apt-get install ubuntu-device-flash
Try the Reboot Recovery or Enter Recovery. If that doesn't helps, I believe the Image has not yet fully been written onto your ROM. I had the same issue and finally traced it to an issue with my Desktop 12.04. So I moved to Mac and Flashing was instant and I was able to boot into Ubuntu via the recovery console.
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