Is it possible ... ?
Yes.
Is it easy ... ?
It depends on what you consider easy. You'd have to do a few things:
- Recompile wyUpdate with a customized name.
- Get a code signing certificate.
- Sign wyUpdate.
- Maintain your own version of wyUpdate on your web server (for self updates).
wyUpdate is a pretty self explanatory name. Most users will grasp that it does updating.