Hey, I thought I'd make it easy for all those who want to flash to the new Official 3.3 AKU, but are afraid of the big-bad new bootloader files. If you flash the official without removing the bootloader files, your phone's bootloader will upgrade to 2.04, in which that case you then cannot flash to any other ROMs at that point. It sucks, I know. So anyway, I pulled those files out, as well as the radio (some people are still skepticle about it), and made a zip for you guys. This will only flash your ROM, your extended rom and radio will stay the same.
1. Download zip
ftp://ppcgeeks@www.ppcgeeks.com/Apache/Users/Phoenx06/
(use ppcgeeks as username, ezupload as passowrd, double click official 3.3)
2. Unzip
3. Place phone in bootloader mode (hold record button and power button, press the soft reset button)
4.Connect phone via usb
5. Run the RUU (APACUpgradeUt_noID.exe)
6. Follow the onscreen instructions
7. Remove phone when finished
8. Perofrm a hard reset (hold both soft keys and press reset button)
There you go! This will leave your extended rom alone, so as long as all your carriers customizations are on it, you should be fine. I have Verizon, and I know it works fine. However, I am quite sorry to say I cannot garauntee other carriers.
Also if you do want the radio upgrade it is located here
http://www.ppcgeeks.com/upgrade-to-r...-41-t6663.html
And you can do the radio upgrade without the ROM upgrade.