It would have to be a helluva deal before I would buy used, but that’s just me.
You could have issues buying upgrades if prior owner fails to remove unit from their “My Uniden” account.
That would not have any effect. Uniden does not use that registration as a basis for warranty work. You always need to include a copy of your actual proof of purchase. Uniden's warranty policy states that it is applicable to the original retail purchaser, so a second (or third) owner, even if within the original 12 months warranty, might have an issue unless they can get the actual original receipt.
From the owner's manual:
WARRANTY INFORMATION
WARRANTOR: UNIDEN AMERICA CORPORATION (Uniden)
ELEMENTS OF WARRANTY: Uniden warrants, for one year, to the original retail owner, this
Uniden Product to be free from defects in materials and craftsmanship with only the limitations or
exclusions set out below.
WARRANTY DURATION: This warranty to the original user shall terminate and be of no further
effect 12 months after the date of original retail sale
I may have it wrong, too. I would like some clarification. I've programmed and purchased keys for others on MyUniden account. I had been under the impression it wouldn't matter leaving another person's scanner there.
You are correct. Otherwise, how could a dealer, such as ScannerMaster or Bearcat Warehouse, purchase and load one of the upgrades without doing that via MyUniden. When the actual owner receives the scanner from one of the dealers, he or she can register it on MyUniden, but it will not show the upgrade purchase, since that transaction was done by the dealer.