Sorentobr Yes - you should. If you are able it is always better to do fresh. but otherwise upgrade is fine... I think from 5.22 to 5.23 there was partition size change so there were problems. From 5.23 to 5.24 there were rom folder changes i.e. amiga folders. From 5.24 to 5.25 while I did not test it, it should be fine. The older versions exept size change were also working but for example from 5.23 to 5.24 favorites folder needed to be added manually if you were using different drive then the install ;-) But dont take my word for it ;-) As I said before it is always better to do fresh ;-)