iPod touch is not updated, stuck at version 4.2, restored the Mac twice, the latest version to download absolutely does not want. What to do?
If appears that you have a second generation (2G) iPod. Those can only go to iOS 4.2.1. If you have an 8 or 16 GB iPod those are a 2G iPod. Apple only made 32 and 16 GB 3G iPods. A 32 GB without a camera can be either a 2G or 3G iPod. To identify your iPod see: