In the past few months, I've noticed that many apps I download or upgrade (via [Redacted]) simply will not work on my iPod touch (2nd gen). Specifically, when I try to open it, it just black screens a while then goes back to the home screen. Since there is an icon, I know that the download and install was successful, but the game itself just will not work. It's not a compatibility issue since the apps I'm downloading are all made for iOS 3.1.3 or above, which I have. One thing I've noticed is that all apps that are mentioned to be cracked with ARM 6 will work, while those that are mentioned to be cracked with ARM 7 will not. So basically, I have a list of release groups that I know use ARM 6 (WYSE and iDWANEO-Team are my favorites), and I know that any app cracked by them will work. Problem is, many release groups are new to me and the games I download will not work. Not a big deal, but if it's an upgrade to a previous app, then I'm SOL because I have an unplayable game that I can't downgrade and don't want to delete because of my save file. So is my assumption correct? And why do some release groups use ARM7 instead of ARM6? The apps themselves probably don't require a certain one, do they?