I am trying to update my new (New to me) r720 its currently on 1.51 and I tried to update it to the latest version but it gives a validation error because apparently I cant skip versions. I tried to look for 1.6x which I need to install before going to 2.x. But I cant find the 1.6x version, I tried searching for it on google as well and the only version I can find is not compatible with r720. Please help thanks in advance