I'm only rating the updater (iPod Software 1.2.6 Updater), not the software it delivers (iPod Software 1.2.6). Too soon to rate that anyway, but it didn't cripple my iPods and they appear to be working at least as well as they were before the update. Download, unstuffing, mounting, and opening the package all worked without flaw and much like installing any other DL'd software. Installed exactly where I expected (/Applications/Utilities ; just like previous iPod Updaters). Updater correctly ID'd my 2 iPods as needing an update and delivered it to them. Works as promised.