Upgrade to Halion4 from Hal3.1+PlayerOEM Bundle

Hello !

I have upgrade one of my two Halion3 Licenses to 4 successfully.

One of them is a Halion3.1+Player3 OEM Bundle - and there it didn`t let me upgrade (So i upgraded first other License) !
Is it possible to upgrade this Version 3 to Version 4 ? - because i plan to purchase and do it.

Can anybody help - how to upgrade this version ?