If you are experiencing issues related to data connectivity following the upgrade or SD card issues when attempting to access photos, music, etc. a hard reset has been reported to resolve the problems. A hard reset or downloading the update via Samsung’s website will wipe the data on your device. You can backup your data prior to performing a hard reset or using the Samsung download with an application such as MyBackup Pro from the Android market.
To hard reset your device:
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.
Sprint also mentioned some users may be having issues with Calender sync after updating to EB13 (Android 2.2.1). If you are having issues with that they recommend you do the following:
Navigate to MENU>SETTINGS>APPLICATIONS>MANAGE APPLICATIONS and select the “ALL” tab. Go to both Calender, and Calender Storage and press “Clear Data” on both of them. After this go back to your sync options and just uncheck and recheck Sync Calander so it re-sync’s with Google and you should be good to go. Now enjoy yourself some Android 2.2 and go get Adobe Flash 10.1 in the Android Market so you can watch tv, enjoy the full web like it was intended, or even play some Flash based games with apps like Kongregate. If you would also like to read AC’s original review of the phone you can read that at Epic 4G Review