Hello , i am trying to upgrade my firmware which I downloaded from tplink.com/ca support. I live in Canada.My version of router is v2  and that is the version I downloaded.

Archer c7 (ca) V2 180305. However wheb i try and upgrade it gives me an error message of 18005 and says the version is not correct. I am at a total loss as to where to go from here. Any help would be appreciated