As such, the internal build number is the best way to refer to a specific firmware.

When Apple releases a new update to i OS — the operating system that runs the i Phone, i Pod Touch, and i Pad — install it.

davesmall, If you i Phone shows an i Tunes logo and a cable, try disconnecting it and reconnecting it. We have bought several i Phones at our company, and we have the same issue with every i Phone updating using a Windows XP.

I'm currently waiting for my music to finish syncing.

Just wasn't able to finish the process without going through this recovery procedure. I had been getting an "Unable to connect to the software update server" error, but it worked fine when I was manually approving each step in identifying the device and checking for updates.