The Sprint Epic 4G Touch, a Galaxy S II variant, recently saw itself updated to Android 4.0.4 and hence needs a root solution again. This guide below aims to be that solution, so read on if you own this device and need root.
I. Before You Begin
1. This guide only shows you how to root SPH-D710, the Sprint version of the Galaxy S II.
2. You may lose all your data by following this procedure, so make sure that back up everything important before you proceed.
3. Ensure that you have all the necessary drivers installed; if not, download them from the next section and install before you proceed.
II. Necessary Downloads
1. SPH-D710.FF18_CL663858_ROOTED-oc-sfx.exe (if you plan a fresh install) or SPH-D710.FF18_CL663858_ROOTED_NODATA-oc-sfx.exe (if you plan to retain your data and apps) [Links available in the first post of this thread]. This guide assumes that you want to preserve your data and uses the NODATA version.
III. Rooting the Galaxy S II Epic 4G Touch
1. Double-click on SPH-D710.FF18_CL663858_ROOTED_NODATA-oc-sfx.exe self-extracting file and extract it to a convenient location (for example, C:\Odin-OC).
2. Double-click on SPH-D710.FF18_CL663858_ROOTED_NODATA-OneClick.exe from the extracted folder.
3. Power off your device and reboot into Odin mode. To do this, press and hold the Volume Down and Power buttons until you get a warning screen and then press Volume Up.
4. Connect your device to your Windows PC. You should see a yellow COM port box light up as soon as you do this. If not, make sure that you have the necessary drivers installed and reconnect your device.
5. Click on Start to begin flashing.
Once the status changes to PASS! and your device reboots, you should have a rooted Epic 4G Touch!
All credit goes to sfhub for packing everything into a nice little tool and if you feel he deserves something, donate to him via his XDA thread!!