If it's getting stuck in the same spot I suggest closing the app totally on your phone and restart remote and aircraft and try again. It should complete.
I never set my phone to airplane mode as it doesn't disturb me. If you bought the fly more combo, make sure you update all your batteries as well otherwise u will have to do it on the field
so i took the battery that got updated. too it upstairs to my fly more combo charge. when i plug it in the charging hub the green light becomes yellow. what does this mean?