Versa Lite fails to sync

[Adidas0810]

Just bought a (used) Versa Lite. It told me I had to update it in order to start using it. I started the update around 2:00pm yesterday and it quit on me around 10:00am today. Now I’m trying to continue it and it’s doing a few things... 1: Saying it “failed to sync” BUT still says it’s “updating” on the app

2: The watch itself keeps telling me “To start, download the Fitbit app” while the app is telling me it’s updating. 
Maybe this is because I bought it used? But this is so frustrating!! Any ideas!? 
I’ve restarted my phone, the watch, turned my WiFi on and off again, turned the Bluetooth off and on again, force quit the app and done it again, “removed” the watch from the app and re-added it. Been doing all of this for over 24 hours now.... any help is greatly appreciated!

Moderator edit: updated subject for clarity

[JuanJoFitbit]

Hi @Adidas0810, welcome to our Fitbit Community! I'm sorry about the issue that your Versa Lite has experienced since it won't connect or get set up on your phone properly. I totally understand how you feel about this and I appreciate the time spent trying to get this issue resolved before contacting our forums.

Please try a factory reset. To do so on your device, follow the steps below:

1. Hold the back button for about 8 seconds. 
2. When the Fitbit logo disappears:

• Release the button briefly (for less than 2 seconds). 
• Hold the button again until they feel a second, longer vibration, which indicates they initiated the factory reset.

After this, set up your watch from scratch as instructed in this help page and see if the issue gets fixed.

Keep me posted on the outcome.