Update (2010/08/25) - I was updated yesterday... Worse than even previously thought...it looks like they not only obfuscated the softphone, but they also, whether purposefully or not, disabled the ability to extend the rings. I can possibly get other features working, but the big one ...
I got the update today on my second MagicJack... This time I managed to intercept the upgrade file!!!
I've tried running that file on several magicJacks now and it installed the upgrade. I also ran the file on the MagicJacks that already received the upgrade and it went through the upgrade a second ...