Are you saying that because of the 4.3 issues?
I would rather not mess with the phone but I just got a gear 2 neo and it will not connect. I think this is because of the older android version. The specs on the gear software say it requires 4.2 or higher
Ya you need 4.3.
So you have options, since you're have a galaxy gear you're probably going to be running stock TouchWiz, so I would just take the upgrade.
You can root later, but the gear would never work with aosp anyway. Safestrap can make your phone run pretty well with a TouchWiz custom rom if you eventually decide you want one.
Or you can load a custom TouchWiz 4.3 rom right now and see if it connects, then you wouldn't lock your phone down permanently.
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