I have a site to upgrade 406 v2 currently running 4.2 and have a majority of 5410 handsets.
These handsets are on R5 , iam upgrading to 6.0 . Just wanted to confirm that these phones
will work ok on that level or no issues upgrading to 6.0. Sorry to be a bit vague but getting
a bit confused with earlier issues with regard to entering No user allow upgrade etc. Iam thinking
I dont need to worry about this and issue only arose when downgrading the 5410. Cheers