You should be fine. But, find out how the upgrade was done.

If your friend upgraded you online using their CR1 instrument then you are all set. Moving CR1's out of an account that they are signed into settles the issue of having to sign a "bluey" to prove who that person is if, say, the upgrade was done over the phone. If however, it was done over the phone, then a trip to the airport may be needed by your friend to sign the bluey.