Stuck after 5.02 update on android spinning topic

Turned my Nexus 10 on today and it had an update to 5.02 so I let it download and install it.

Bearing in mind my Nexus 10 is as standard from when I got it completely stock non rooted.

It rebooted and a blank screen was all that appeared. I left it for several minutes and still nothing.

Then i got an android laying on its back with an exclamation mark..

I read about flashing the full image on another thread to resolve this issue

So i went ahead and unlocked my bootloader,

erased everything and flashed everything as below:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
fastboot flash bootloader bootloader-manta-mantamf01.img
fastboot reboot-bootloader
ping -n 5 127.0.0.1 >nul
fastboot flash system system.img
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash cache cache.img
fastboot erase userdata
fastboot flash userdata userdata.img
echo Press any key to exit...

Now i rebooted it and got the android opened up cog spinning on his back the data sort of dna web thing spinning too for a short while. however after a few minutes the device rebooted and is now stuck with the Nexus boot animation.

any ideas what i can do?