I dont know about the invites but you can download the necessary software goin thru their support page which will lead you to blackberry.com to download the goodies ;)
* Bold xxx8211; minimum 4.6.0.0 and above; optimal at 4.6.0.167 and above
* 8820 xxx8211; minimum 4.5.0.0 and above; optimal at 4.5.0.110 and above
* 8320 xxx8211; minimum 4.5.0.0 and above; optimal at 4.5.0.81 and above
* 8220 xxx8211; minimum 4.6.0.0; optimal at 4.6.0.174 and above
* 8120 xxx8211; minimum 4.5.0.0; optimal at 4.5.0.110 and above
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