Kinda - I have to re-tether whenever the phone is rebooted and re-run blackrain. Then the phone will work...until the next reboot...and then I have to re-tether.
I've learned that there was a 24kb hole in the iBoot ROM that was taken advantage of...code was injected into that area to allow a jailbroken phone to boot on its own. All iBoot versions 359.3 and earlier have this hole. Beginning late last year...around week 37, Apple patched the hole...version 359.3.2 - the version that's on my device...manufactured in week 47. If you look at the 4th and 5th digits of your serial number, it will tell you the week of manufacture.
Anyway, I can jailbreak, but until the hackers figure out how to get around this, I have tether and run blackrain after every reboot.
I'll just wait because it's too much of a pain to keep doing that.