How to Upgrade PST File - Version 2.0 How to upgrade PST files from ANSI to Unicode PST with some relevant third party application? Try Outlook PST Conversion tool to convert Outlook PST files from old PST to new PST file and vice versa. You can easily upgrade Outlook personal folder and open Outlook mailbox in Outlook 2003/2007/2010. Software can't upgrade corrupted PST files of Microsoft Outlook you must need to upgrade Outlook PST before extending 2GB limitation. This utility is capable to send out all of its email metadata information (to, cc, bcc, from, sent/received date & time, attachments etc). Demo version of ANSI to Unicode conversion tool allows users to convert only first 3 folders from Outlook PST files. Demo version is available at free of cost, by using demo version you can examine its entire feature before buying full version. To convert all folders of PST file to ANSI or Unicode PST format, get full version of PST Upgrade tool at just only $49 (personal license) and $129 (business license).