Hi, I'm wanting to upgrade the firmware on my HTC Hero. I've d/l the HTC Hero (Sprint) 2.1 Software Update | 05.19.2010 from here: HTC Mobile Phone Support - HTC Hero? (Sprint) - Downloads I believe this is firmware is the upgrade correct? Also I have HTC Sync installed on my Windows 7 laptop, and I'm not able to sync it. Do I need to use the HTC Sync to install this firmware upgrade or is it not necessary?