I tried calling Voom to reactivate my boxes when I noticed they deactivated them 3 days earlier than I requested and the CSR told me that they cannot reactivate them. So if your boxes were deactivated, there is no way back to reactivating the OTA tuner. I sure wish there was a way to get the OTA tuner working.
It's by a member here named Ultratryon. He is working on a project to figure out how to simulate a "hit" or activation to the box by using his computer. He cannot post the information in his website on these forums due to the risk of Motorola finding out and possibly bringing a lawsuit against satellite guys for information regarding the reverse engineering of the receivers. If you want to see his on-going progress or make a comment or question, here's the address: http://www.ultatryon.com/
Lilyarbie, I figure it is just a matter of time before someone comes up with software we can download for the STBs. If people can come up with circut boards and software to hack all the satellite services then we will see software for the 550 at some point. I can still get new software for my 10 year old MPEG-2 FTA receiver although manufacturer support has long went away.