This has been discussed before.
If you don't turn off the power to the DVR once it's got a signal, it'll not do that reboot thing once the signal goes away. In other words, keep the receiver powered as you move and it will then work without a signal when you find that tree to park under.
By all means, DO complain to DirecTV. But the workaround will maybe get you thru until somebody decides to listen.
We use an inverter on ours, so we can keep it hot when we move. We've only had this happen once since whatever they did to the software, and we haven't actually tried the workaround, but others have - including Bill Adams, a certified (maybe certifiable) expert. If Bill says it works, it works.
al
