Those aren’t versions of Brave. That’s something else entirely. Ignore it. Essentially those numbers are just where you installed it from and all.
With Brave open, go to your settings and you should see version number in your settings within Brave. Two places to look:
Click About Brave
OR YOU COULD JUST OPEN SETTINGS
At which point it’s on the bottom left.
Btw, as confusing as it is, the newest version of Brave is 1.56.11 (the prior had been 1.56.9, it seems like Brave reversed things or had a typo on earlier number)
As to sync, it generally needs devices to be similar in version numbers. If there is too big of a deficit, the sync won’t work. That said, I’m not sure what the magic number is on it being “too big” of a gap, but know there have been people who had sync codes that didn’t work because they let it be like 3-5+ versions out of date. One very important thing to keep in mind is that Sync is not a backup.
As to how to sync, if you’re unaware, I’d say to check out the links below:
-
How do I set up Sync (official help article)
-
Understanding Brave Sync (official help article)
Then my little FAQ sections below based on areas people have had difficulties in the past.