Nexus 10 stuck in bootloop after Lollipop flash no ADB and no Fastboot So .... I flashed the mantaray-lrx21p image from Nexus Factory Images on my Nexus 10 (16GB Wifi) and it's stuck in a bootloop.

No problem, I thought, I can get into fastboot and fix it, right? Maybe do a wipe and try again? Yeah, not so fast. I get the bootloader screen, but the only option is 'Start' which just boots into the system that bootloops. 

That's OK, I'll just use fastboot to wipe it. Nope. Fastboot doesn't detect a device.

I've tried both ADB and fastboot on Mac &amp; Linux. Same issue.

Ideas?
Had the same issue right now. fastboot oem lock didn't find the device.
Disconnected the device from USB and held the power button for 10s to reset. Booted like a charm afterwards