How does iPhone 2G Download Apps?

[awesomest47]

The title may make me sound stupid but here is my question:

So, I am going to buy an iPhone 2G (I know it's obsolete but I don't care but my question is can iPhone 2G download older versions of apps from iTunes? For example if the 3rd version of an app isn't compatible with the phone will iTunes just give me the first edition? Is the same thing with Cydia too? I want that cool app that changes your carrier name and I want YouMail on the phone. Will these work as well? Also, for any iPhone 2G owners how would you describe the audio quality when using earbuds? Thanks!

 

[r.j.s]

If it can't run the latest version of an app, you can't download it.

So, you may not be able to run the apps you want.

 

[Nermal]

I have an old first-gen iPod that can run up to 3.1.3. You can only download the latest version of apps from the App Store, so if the app has been updated to require iOS 4 or later then it won't run and there is no option to download the earlier version. It would appear that Apple uses this as a way to "force" newer device sales.

I can't speak for Cydia.