If it's a regional variant, being used outside of that region (ie US variant used in Europe) you may not be able to register it directly, in which case I'd suggest reaching out to your country/regions Toshiba customer support.
If it's a regional variant, being used outside of that region (ie US variant used in Europe) you may not be able to register it directly, in which case I'd suggest reaching out to your country/regions Toshiba customer support.