While I do understand the importance of making sure that the firmware download has been successful and uncorrupted, I don't believe that I would have corrupted firmware images for each 1.3X version that I have installed recently: 1.32NA, 1.33NA, 1.34NA.
If anything I would be able to believe that somehow my configuration was partially corrupted during the backup stage of upgrading, and then this corruption could have been carried forward through each upgrade.
Regardless, when I do attempt the manual configuration following a factory reset, I will download a fresh copy of the 1.34 beta firmware and perform a bitwise comparison and also compare checksum to the previous download. It's just a matter of finding the extra hour to comb through all of those pages and find everything that I have tweaked.
Speaking of potentially corrupted downloads... there was an MD5 value published with 1.33beta... Hmm...