well obviously i chose that... the link that points there is an image that says:
upon clicking that you're taken to the page mentioned .....
HP iPAQ 2220, 3900 and 5400 series owners
If you own an HP iPAQ 2200, 3900, or 5400 series device, then Pocket Backup is already installed in ROM - it's just called 'iPAQ Backup'.
If i click the link older ipaq users to upgrade then it brings me to the same page as the download button. Curiously enough it's not the standard version.. it's the PLUS version that's downloaded even tho i didn't choose that. But it still inevitably is only a demo running for 10days.