I assume you have already done a proper Forum Search for your model number in case other people have already answered your question ?
If so and that didn't help then check out this thread: https://community.sling.com/message/10363#10363
Come back if it that doesn't help either.
All Slingboxes use the same BIN files, so if it works on the older Slingbox it will work on the 350. The latest installations instructions are at
I just changed from Comcast to WOW cable. When I went to setup the DTA that is attached to my SB the model uDTA-E model doesn't appear in the menu, therefore I cannot change channels. Any suggestions how I can make it work would be greatly appreciated.