Q: upgrate to IOS 4.3

Yes, the solution is buy a new iPod.

Allan

What makes you think you have a 1G iPod? What model numbr is on the back?

A 1G iPod can go to iOS 2.2 via iTunes and iOS 3.1.3 via

Purchasing iOS 3.1 Software Update for iPod touch (1st generation)       

https://buy.itunes.apple.com/WebObjects/MZFinance.woa/wa/touchLegacyLandingPage

  A 2G to 4.2.1. Requires iTunes version 10.X. If a Mac it requires OSX 10.5.8 or later. With OSX 10.4.11 you can only go to iTunes 9.X

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.

Then you are hosed.

As others have said. a 2G iPod can only go as high as 4.2.1. You have two choices:

- Get a newer model iPod

- Live without the newer apps.

Look at "Vintapps" in the Apple app store.  It has tons of available apps for all those earlier ios devices.  And you there is a one-click link to the Apple app store to install them right to your ios device.  Many are free.

Vintapps info/support:  https://www.facebook.com/VintApps313

Although I wrote this 99 cent app specifically to help solve this problem, I need to add that "I may receive some form of compensation, financial or otherwise, from my recommendation or link."

Be sure to backup your current apps on earlier devices.  Once the vendor updates them past your maximum iOS, they can not be downloaded again.