Okay so my brother got an update for his nexus 7 to 5.1 I believe it was. Anyways for whatever reason the update has failed and the tablet will no longer load up to android. Just gets stuck on the boot up screen. I can access fastboot and recovery mode but recovery is saying no command and my pc doesn't recognize the nexus 7 so using adb doesn't seem to be an option. I've gone through and updated all the drivers needed to see the tablet. I'm wondering how in the world do I factory reset this thing? I'm like at a loss so if you can help much thanks to you.
xda-developers