Default Problem after update

After I updated my phone to 4.4.2 I lose service and have to restart my phone multiple times a day to get service back. I called T-Mobile and after resetting the phone they said they would replace it. Then I called Samsung and they said to bring it to best buy to have it reflashed. I can go there but I could also flash it via Odin at home. Now my question is, if I flash the stock rom via Odin will it trip the Knox counter? I read that it won't and I read that it can. I just want to make sure it won't before I flash it incase I have to have it repaired or replaced.
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