AT&T is notorious for preventing its customers from installing non-Market apps (better known as sideloading) on their Android devices. The carrier did it to the original Android 1.6-running Dell Streak, so it's no surprise that the limitation appeared in the official Android 2.2 (Froyo) update too.
There was a very simple workaround to enable sideloading on 1.6 (tutorial here), but it doesn't work on AT&T's crippled version of 2.2. So does this mean that anyone who chooses to use this official build (rather than one of DJ_Steve's custom ROMs) can't install all of the great apps that aren't in the Market? Of course not!
Here's how to get that precious "Unknown sources" option on a Dell Streak that's been Froyo-ized by AT&T:
1. If you're not already using it (and many of you are), download and install ADW.Launcher:
2. Long press an open area on your Streak's home screen to bring up the "Add to Home screen" menu.
3. Tap Custom shortcut > Pick your activity > Activities > EMList > EMListInstaller > OK.
4. Tap the new icon on your home screen then go to your app drawer and locate the newly created EMList icon/app. If it's not there, reboot your Streak and check for it again.
5. Open EMList, scroll to the bottom of the list, and tap app_security.
6. Tap update unknown resource property to enable it.
To confirm that it worked, press the Home button on your Streak followed by Menu -> Settings -> Applications. You should now see the "Unknown sources" option. Tap it so you can install all the apps you don't find in the Market at any time.
Thanks, E_Micro!
