If your SlingStudio tells you that it needs a firmware update, but it's not working properly, take a look here.
Normally updating the SlingStudio firmware (the internal firmware that makes the SlingStudio work) should be an easy, very hands-off process. When you are notified via the Console app that an update is required, you can let the app take care of it automatically.
The firmware update doesn’t download;
The firmware update doesn’t install;
The firmware download (or update) displays an error message …
… then there could be a problem that needs to be resolved.
Here are some things to try:
Make sure that your SlingStudio is properly powered up with its LED band glowing steadily blue.
Check that the iPad is connected to the SlingStudio Wi-Fi hotspot during the firmware update process.
Make sure that the SlingStudio is nearby the Console app on the iPad while the firmware update is taking place.
Delete the Console app from the iPad, then re-download the Console app from Apple App Store. Try the update process again.
Finally, try closing all of the other apps on the iPad except for Console app.
If none of those things help, please contact SlingStudio customer support for assistance.