What is Slingbox Software (firmware)?
It's the internal software that makes the Slingbox itself work.
The Slingbox Software isn't the same as Watch on Slingbox.com (or the older SlingPlayer software application for your computer):
Watch on Slingbox.com and Setup on Slingbox.com are websites you visit with your browser. They are what you use to setup and watch your Slingbox.
Slingbox Software is installed inside your Slingbox. It's the special software that makes the Slingbox work.
You'll never directly see the Slingbox Software, or work with it. It's used by the Slingbox to handle "housekeeping" functions, like:
controlling the video output from your Slingbox
ensuring that you get the highest video quality
sending remote commands to your set-top box (or other A/V source) so that you can control your TV anywhere
... and more
How do I update the Slingbox Software?
Slingbox.com will notify you of the update and do the work for you. For more information, see the linked articles below.
If you're using your Slingbox inside your home network: update the Slingbox Software as soon as you can ... it helps your Slingbox work better.
If you're watching your TV remotely: you can put the update off until you're home ... in fact, it might be better to wait.
Here's why: most of the time upgrading the Slingbox Software from outside your home network works just fine. However, if something goes wrong, it's not the end of the world ... your Slingbox isn't ruined or anything. But it does need to be reset. If you're away, then someone at home must press the Reset button on the back of the Slingbox for you. If there's no one home to do that, then you won't be able to use your Slingbox until you get home and can reset it yourself.
So if you'll be home shortly, it's better to wait on upgrading the Slingbox Software. If you won't be home for a while, and there's someone there who you can instruct to reset the Slingbox, then you can try updating the Slingbox Software if you like.
Here's some more info
If you're prompted to update the Slingbox Software for your Slingbox (also known as "firmware") and you're away from home, the best advice is: wait.
Are you having difficulty updating your Slingbox firmware (software)?
If every time you connect to your Slingbox in SlingPlayer 2.0 for Windows you are prompted to download an update, you may have an incomplete download stuck in the SlingPlayer download queue.
If the firmware on your original ("Classic") Slingbox is very old, attempts to update it may produce an Invalid Slingbox ID error. This error means that the firmware on your Slingbox Classic is too old to be updated by SlingPlayer 2.0 for Windows. The remedy is to: