There are no direct inplace upgrade options for BES Express 5.0.
You do have some options though, but transporter is unsupported ( do at your own risk ) BES/SBE/BPS 4.x is installed on Exchange server:
A. You can uninstall old BES/BPS version and install BES Express 5.0 with a new database. This most likely will require a wipe of the device to activate on BES Express 5.0 or possibly remove all desktop service books before trying.
B. You can knife edge cutover to different hardware/VM, uninstall old BES/BPS version thats on the Exchange server, install BES Express 5.0 with a new database and possibly use transporter to move users over. Dont forget to decommission old BlackBerry server KB on bottom.
C. Install BES Express 5.0 with a new database onto new hardware/VM and possibly use transporter to move users. Dont forget to decommission old BlackBerry server KB on bottom.. If installed on separate hardware/VM
(not installed on exchange server) you can still choose the same above options. Just substitute installed on exchange location to where you want it to end up on.
Links and more here written by me BES/SBE/BPS 4.x upgrade options to BES Express 5.0 - BlackBerry Support Community Forums
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