Full OTA update for a clean install is here
http://www.androidpolice.com/2011/07/08/exclusive-download-leaked-1-70-605-0-update-for-the-htc-thunderbolt/
i would strongly suggest to do a clean full insatll wipes all data
kind of odd that the leak is the same build number but the radio has a newer date than what is listed on the Verizon pdf. I installed the radio from it on the Gingerbread rom I'm running so we'll see how that goes.
edit: In reference to the radio not matching the pdf, it looks like Verizon just messed up on the pdf. The baseband in the OTA that people are receiving matches the one in the RUU listed above.
