Model :

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ISP :

So, while I was trying to find the most recent firmware version of my router, I found myself in kind of a dilemma...

Being on the US version of the website, immediately found my router there, but there is a warning which says that you need to update the firmware from the local website (this being Romania in my case).
So I went there and at the Archer C2 page it showed me the AC900 version of the router and I'm not sure if there are differences between them. I bought my router locally so I don't know why is this a problem.

So I came here to ask what website should I follow since I'm not sure of it and I don't want to void my warranty. Thanks in advance.