Nexus 10 - Android 5.0.1 OTA upgrade, "no command" and suggested steps failed

I was trying to install the OTA upgrade on my Nexus 10 running Lollipop 5.0.1. Got the "no command" problem. I tried the steps below from [this link](https://support.google.com/nexus/forum/AAAANseOu18WF6iOz7-XQY) . > I suggest you try the following: > > Press and hold Power button until your device powers off (it could take 30 seconds). > > 1. Press and hold Power and Volume Down buttons simultaneously until you see something other than Google on the screen. > 2. You should see a large arrow at the top of the screen. > 3. Tap Volume Down repeatedly until you see Recovery in the arrow. Then tap the Power button > 4. You should see an android on his back, chest open with a red triangle and exclamation mark. > 5. While holding Power button tap Volume Up once then release Power. > 6. You should now see a list of items at top of screen. > 7. Tap Power Down until the item to erase or wipe the cache partition is highlighted. Then tap Power button to initiate. > 8. Status messages will appear at ths bottom of the screen. Be patient - it can take 10-15 minutes to complete. When done restart the Nexus. > > Wiping the cache partition does not impact any of your data, but it may take a while before your apps repopulate their cache values. During this time some may appear a bit slower than previously. * I can't get past step 1, as when I do that, it keeps saying, "download in progress. do not close target ( or similar)". * I tried the Power + Volume up + Volume down buttons, and get the menu, but don't see as below. * I also tried Nexus Root Toolkit flash + restock, and that also shows "finished", but reboot goes back to "no command". What to do?