Downgrade firmware for WDAAP0000NBK

WD Legacy Products WD TV Media Player
2

https://support-en.wd.com/app/ansresults/kw/wd%20tv%20firmware%20rollback/page/1

if the firmware version you’re after is not on any of the links … google the firmware you’re after, download the zip, extract and edit the *.ver file (use Notepad) to a higher number than the firmware you’re currently running.