HELP!!! What does this mean?

Jul 19, 2010
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If Rooted

Make sure you have a recent Titanium Bakcup
Download the file PB31IMG.zip and place it in the root of you SD card
Power off the phone and then press and hold power + volume down to boot into the boot loader
Press and hold volume down and the power button to boot into HBoot
The phone will find, load, and check PB31IMG.zip. It will then ask you if you would like to update using the file
Press volume up to update the phone
Reboot the phone – you are now back to stock
Boot the phone, go through the setup (but don’t bother to set anything) and remove PB31IMG.zip from your SD card.
Download the file dinc_ota.zip, rename it to update.zip and place it in the root of your SD card.
Reboot into recovery (turn on USB debugging and run “adb reboot recovery” or power down the phone and then press and hold power and volume down)
Press volume down once, then press the power button to select Recovery
Press power and volume up to bring up the recovery menu.
Use the volume rocker to highlight apply update.zip, then power to run it
Reboot the phone when prompted.
Go to Settings > About phone > Software information > Baseband version and verify that it’s 2.05.00.06.11.
You can now re-root your phone by running Unrevoked 3 and make a new Stock + OTA Antenna backup in nandroid.

I was following these instructions to update my radio... I am at the point where I've put the update.zip file on my sd card and I am rebooting into recovery. My device now displays a black screen with a red triangle/! over a picture of a device... I pulled the battery once and the device powered on, so I tried again and I have the same red triangle/! over a picture of a device... WHAT DO I DO?