No you will not lose any data
If you just put in the DVD for Home Premium and choose "Upgrade" then you won't lose any data, it will just change which edition that you're running.
Of course you can upgrade it as long as there is an update. But why upgrade it?
yes
first upgrade to win7 home premium and then use anytime upgrade to ultimate! that was easy....
Upgrade Your House ( Last Upgrade )
delete the data and puted in your psp
vutaw
Upgrades infer that you upgrade the physical components of the computer,rather than any of the data inside it's storage devices.
In order to get skype you need to upgrade your psp to at least 3.90(only for slim). The other psp I'm not sure of.
To upgrade a PSP system software of 5.55 to 6.10, first download an upgrade to the computer. Then pass the upgrade to the PSP, using Settings, with the use of a USB cable or memory stick.
6.60 is already an upgrade from 5.50.
6.60 is already an upgrade from 5.50.