After the script finishes, your Nexus Player will reboot. The first boot will take 5–10 minutes. Do not unplug it.
Once you see the setup screen, you may relock the bootloader for security:
adb reboot bootloader
fastboot oem lock
Short answer: Technically yes, but practically no. nexus player iso
Because the Nexus Player uses an Intel Atom (x86_64), you can write a standard Ubuntu Server ISO to a USB drive and attempt to boot. However:
The only successful Linux ISO experiments have been headless servers (using Alpine Linux) to run a simple Pi-hole or a low-traffic web server. For a media player, Linux is useless. After the script finishes, your Nexus Player will reboot
What if your device is bricked so badly that it won't enter fastboot mode? The Nexus Player has a hardware failsafe.
How to force recovery without a booting system: The only successful Linux ISO experiments have been
If that fails, and the device is completely unresponsive (QHUSB_BULK in Windows Device Manager), you have a true hard brick. No "Nexus Player ISO" will save you. This usually requires a JTAG repair or motherboard replacement.