ok, following the clues in this thread, i've located the .brf that contains the "DIRECTV Central" title that appears at the top of the "now playing" screen in 6.2. i extracted it, changed the title, then re-inserted it. i can then extract the file and see that my changes are indeed in place, but the title doesn't change, even after a reboot.
in 3.x, we had to remove the "CompressedFile" object; is there something like this in 6.2?
btw, the path to the proper .brf is:
edit: by the way, i do know that i'm on the right track (and am looking at ther right .brf) because i hexedited partition 10 to change it initially, and that change *does* show up. however, i had to change it in two places, so this is what led me to believe that there may be a compressedfile thing somewhere.