0:05 Before changing a device release, save the configurations you want to keep.

0:16 Select the device and open Properties from the topology toolbar.

0:22 Check the current OS version before choosing a different release.

0:30 Select a supported target version and read the release evidence shown below it.

0:39 Choose Preview to review the configuration changes before applying the upgrade.

0:46 Inspect the lines carried over unchanged and any lines that will be translated.

0:55 Review Dropped carefully because any listed configuration lines will be lost.

1:02 The preview itself does not change the running version.

1:09 Choose Upgrade to review the final confirmation and its reload warning.

1:17 Cancel if you are not ready to change the device.

1:37 When you are ready, confirm the upgrade to apply the reviewed change and reload.

1:47 Wait for the device to finish reloading before checking its console.

1:57 Run show version to verify the release that the device now reports.

2:10 Check the saved configuration to confirm that the settings you need remain present.

2:21 Reopen the lab and Properties to confirm that the selected release was kept.

2:28 This changes the simulated device release; it does not install a real firmware image.