I had heard that would work, that is until I actually tried it a while back. I deleted a satellite, then whenever I "browsed" the channel list while watching TV, when I came to those channels the receiver would lock up (and reboot).
As a side note, back then I was doing lots of apparently devious things as I was regularly crashing the box. I was NOT HACKING, just trying different setups and ways of doing things, etc.
Then after I had settled down into gentler modes of operation
something strange happened (like days later). All of a sudden the channel I was watching just blacked out, I checked the signal meters, and "strength" was maxed out while "quality" was zero. I tried another channel (same TP), same thing. Maybe some nearby impressive interference so I tried another sat and a different frequency, same thing. I powered off for ~30 seconds and back on, same thing. Then it immediately started rebooting but this time it was different, it showed nothing but a lowercase "b" on its front panel (could have been a 6 as its 6 is missing the upper segment). The reboot took longer than usual, but it did come back up. OK, sorry to stray off topic just though I'd mention that and see if anyone else has seen it do this. That was over a week ago and since then I've been using it pretty regularly without any problems.