I have a true active ATT phone with the following:

1.1.1 (3A109a)
AppSnap Installer 3.01

How do I upgrade to 1.1.4 without losing all the apps and
customization that I already have on the phone now?

I cannot find a tool within the realm of the Installer programs
to take me from 1.1.1 to 1.1.4.

Any help is appreciated...goal is to not lose data and/or customizations.