Samsung has taken down Froyo update for Epic 4G following user complaints related to couple of issues. The over-the-air and the manual updates have been pulled as the EB13 update created some data connectivity and SD card related problem for number of users.
Samsung says users suffering from these issues can do a hard reset the phone to resolve the problems.
To do a hard reset:
1. Turn off your phone
2. Hold the volume down, camera and power buttons until the system recovery screen appears.
3. Use the volume keys to scroll to wipe data/factory reset and select that option using the home key.
4. You will see a warning on the screen telling you that you are about to reset your phone and erase all your personal information.
5. Press the volume up key to proceed. Press the volume down button to exit and not reset your phone.
6. After the reset is complete, use the home key to select reboot system now.
7. Your phone will turn off and turn back on.
this is fake, it’s still up.
http://www.samsung.com/us/support/downloads/SPH-D700ZKASPR