can't update newest version from server

[BeanHhb]

hi edvin,
I download your demo and make it run.
But i meet some problems in update verison.
There is a fxldemo-2.0.jar in <app.cacheDir>, which i have made some change.
When I run the fxlauncher.jar, it still come to the fxldemo-2.0.jar customed by myself rather than the one from server.
As I thought， it should be download the version from server and cover the local version.
If i delete the jar in cacheDir, it can update normally.
How can i make the server jar override the local jar?
thanks

[BeanHhb]

I find out the reason.
Because i upload the jar before i install local app.
It can't update the version which is earlier.