Possible upgrade Silverfast SE to SE+iSRD ?

[pixmaker]

On my Silverfast CD there is 4 versions: SE, SE+iSRD, SE Plus, SE Plus iSRD. My S/N code is available only for SE version for my Plustek scanner (7200i). What are the additionnal functionnality of the "SE+iSRD" version ? This version is not describe on this internet site. Can this version proccess Infrared and SRD simultaneously ? Can I upgrade my "SE" version to the "SE+iSRD" version ? I can't find this upgrade on the downloads pages.
Thanks. :(

[LSI_Bruhn]

The SE iSRD is just a additional description by the manufacturer plustek. For us a SE has just the additional feature iSRD built in with the infrared scanners. So the SE number will automatically provide the iSRD feature when it is available.

kind regards