Recently purchased 100 devices and have an issue with one of them. Device booted up normally at first and I was able to access Wifi & log in to my gmail account. Got to the main screen and applied the Wireless Update as prompted. After the update finished, the device showed an icon of an Android droid that had fallen over with the text "No Command". I could do nothing from that page. I restarted the device and it is showing the text "=> FASTBOOT mode...". I have restarted in recovery mode and tried performing a Wipe data/factory reset but that didn't help.
I'm stuck and the device is useless right now. Any way to resolve this?