Would you mind to check your update version shown on your device? This is mine after flashing your zip, do to root and maybe other twrp reasons I couldn't update it ota
Who said that i already upgraded to Nougat?
I uploaded to MEGA the OTA file i got yesterday in my Shield TV 2015 16 GB but i didn't upgraded yet.
I'm not in a hurry to upgrade until i'm completely sure that i can update the old TWRP i have right now with the new hacked one and flash OTA and flash supersu from it without problems.
As i posted in my previous post a Nvidia rep made a sticky post announcing on Nvidia Geforce forums that the Shield TV 2015 (FINALLY) got the Nougat upgrade and labelled it 5.02 OTA upgrade and that upgrade is the one i posted.
This 5.02 OTA upgrade is pressumed to have the same fixes already added to 5.01 and 5.02 OTA fixes released for Shield TV 2017 version and therefore the proper number should be 5.02 and not 5.00 even on Shield TV 2015 16 GB.
If some Nvidia dev forgot to name the 2015 OTA properly as 5.02 (or 5.0.2) i can't help...
Hopefully for the Shield TV 2015 owners the Shield TV 2017 owners were the betatesters (5.00 and 5.01) and early adopters can skip 2 OTA versions bugs and get directly the 5.02 OTA version.