I don't think so? Isn't the point of the suplicant model introduced in wpa1 that you can upgrade security in software, so upgrading to wpa2 should be possible f

I don't think so? Isn't the point of the suplicant model introduced in wpa1 that you can upgrade security in software, so upgrading to wpa2 should be possible for most things that ran wpa1 and had a viable way to get software upgrades.