Bricked Thunderbolt by flashing MR2 update on Rooted phone

thanks for replying. thought i was on my own for awhile....
under right click properties...
file is on the root. E:
file is named properly.
didn't extract anything. It doesn't make sense. I can see it on the root along with the other folders, but when I look from recovery it isn't there.

You don't go through recovery for radios... you need to boot into hboot. Power off the phone.. power it back on while holding the volume down button at the same time until the phone starts into the hboot/bootloader screen. The zip should automatically start uploading itself. When asked if you would like to install the update.... use the volume key to select YES.
 
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I only looked in recover to see what was on the sd... to see if the zip file was there.
when i power up in hboot, it loads normally, without the new zip coming up.

i redownloaded the radio.. right now it is called mdm9k, i rename it PG05IMG.zip
and put it on the root.
 
Where are you getting this file from??? It doesn't sound like it's from a good source... go to the "Latest Radios" link in my signature below... click on the link for CDMA: 1.48.00.0906, it's the latest CDMA Radio. You don't need to rename the file... it downloads as a PG05IMG.zip file.
 
It's finally loading. almost ready to flash custom rom. will let you know if it all works.
don't know what i would have done without your help. very much appreciated!