I have Norton Mobile Security on my S6 and, when I try to update the youtube app using Google Play, I get a 501 error. I've searched extensively online for solutions and the only two I find are do a factory restore or an apk. I'd prefer not to do a factory restore and Norton Mobile Security tells me that the apk sites are unsafe. Any suggestions? Thanks!
You are welcome.
Glad I could help.
Thanks Peter!
This 501 error is actually a Google Play error. See here for common Play Store errors and fixes.
https://www.androidpit.com/how-to-solve-google-play-store-errors