You can only use this upgrade if your screen size can accommodate 800x600 (at least).
What do we mean by this?
If your current version of EeziAccounts already completely fills your screen then you shouldn’t apply this upgrade unless you can adjust your screen to 800x600. Versions up to version 4.1 run on a 640x480 screen size, while version 5 needs an 800x600 (or larger) screen. If you are not sure about this, you may need to consult someone with the necessary expertise to make sure.
You should apply this upgrade if your program is Version 5.3 or less. This upgrade makes your program version 5.4