After reading the forums, I may have something new.
I was following the tutorial step by step when I got to the bootloader.
I hit the bootloader but nothing happened. I wiped the entire slate clean on the thunderbolt, which basically formatted everything other than my 32gb card.
OK. I start all over again by downloading PG05IMG_Downgrade (935 MB) It stated about 460MB but downloaded 935mb. Also redownloaded exploits.zip and PG05IMG.zip (399.38MB) Got through 2 steps until I added adb shell. It pulled up a # sign instead of a $ sign. Also, the bootloader screen wont come up on the Thunderbolt. I've done this numerous times and still no $ sign....only the #.
adb does recognize my phone