Upgrading a Zimlet Use the same steps as deploying a new Zimlet to upgrade a customized Zimlet. The new Zimlet zip file should have the same name as the existing Zimlet zip file. 1. From Configure > Zimlets gear icon menu select Deploy. 2. Check Flush Zimlet cache so the upgraded zimlet will be used. 3. Browse to the Zimlet you want to upgrade, and click Deploy. 4. Click Finish.