The Nvidia support team have pointed me over here… I’ve got an out-of-warranty Shield TV that won’t boot past the Nvidia logo. I can get into fastboot, but the recovery kernel and safe mode options also get stuck at the logo.
As a last resort, I’m trying to re-flash the device. I can see it from the fastboot devices command, but any attempt to actually do anything fails:
C:\platform-tools>fastboot oem unlock
FAILED (Write to device failed (Unknown error))
Finished. Total time: 5.008s
C:\platform-tools>fastboot flash staging blob
Sending ‘staging’ (6436 KB) FAILED (Write to device failed (Unknown error))
Finished. Total time: 15.011s
Any suggestions welcome! Thanks in advance!