It seems that the jsp pages are cached also if you're using these pages inside the _dev directory. I installad a sample inside the:

C:\Users\Administrator\AppData\Local\Zimbra\Zimbra Desktop\zimlets-deployed\_dev

directory, but if i change the jsp content does not reflect a change into the browser. I've installed the "com_zimbra_example_simplejspasync" example.
Someone can help me ?