I had the same problem. My Fitbit app is on my iPad. After I entered the four numerisc which appeared on the Versa during the set up process on the iPaed, the process got stuck on the next stage of the set up where I assume that the Fitbit app was attempting to download the newest version of the software to the Versa. I tried a number of things suggested in the community discussions, but nothing seemed to work; after applying the proposed solutions and re-initiating the set up process, it always got hung up on the communication between the app and the Versa - the little wheel just whirled and whirled.
I was using the iPad's Bluetooth function for the communication with the Versa because the access to my house WiFi is password protected and I have long since loss the password. I read somewhere in the community instructions that it would take longer to update the software version with Bluetooth so let the communication process running with the Versa still charging and went to bed.
First thing this morning when when I checked the software update had apparently completed and the Versa was ready to complete the few remaining steps of the setup process and is now working as expected. So if you are having the same problem I had, the solution if you are using Bluetooth is to be patient and let the process run to completion. I don't know how long it took because I was sleeping, but it certainly isn't quick. I hope this helps someone. Good luck
