how do i upgrade the software for a version 4.2.1

It seems yo have a 2G iPod. Those can ony go to 4.2.1

Identifying iPod models

iPod touch (3rd generation)

iPod touch (3rd generation) features a 3.5-inch (diagonal) widescreen multi-touch display and 32 GB or 64 GB flash drive. You can browse the web with Safari and watch YouTube videos with Wi-Fi. You can also search, preview, and buy songs from the iTunes Wi-Fi Music Store on iPod touch.

The iPod touch (3rd generation) can be distinguished from iPod touch (2nd generation) by looking at the back of the device. In the text below the engraving, look for the model number. iPod touch (2nd generation) is model A1288, and iPod touch (3rd generation) is model A1318.

This means we just need to pull our pants down and BEND OVER, as we are screwed.

Yes, no Walking Dead, Dead yourself app for us poor unfortunate souls. How dare we expect to continue to get use out of something we paid a few hundred bucks for TWO WHOLE YEARS AGO.

Hey Apple, why don't you just come over to my house and steal all the cash from my purse or sell me a timeshare. KA-GEEZE!

Planned obsolescence. Wonderful. Another reason to HATE APPLE.