That was quick Ė the Sprintís Epic 4G has already been rooted by the crew over at SDX-devs. In other words, now you can root that phone you donít have yet. Itís a method requiring adb (Android Device Bridge) commands and thus desktop connectivity, but a one-click solution will probably emerge sooner rather than later. Note: it says EVO root, but the method works on this phone as well, donít let the filename fool you. Instructions below:
To be clear, the file youíll need is HERE.
download this file
run these commands thru adb
adb push c:downloadsrageagainstthecage-arm5.bin /data/local/tmp
chmod 755 /data/local/tmp/rageagainstthecage-arm5.bin
exit out of the adb shell, and type adb shell again. this time it should drop you to # instead of $.
if it goes back to $, run the exploit again,
and exit out of adb and then adb shell again to see if its # .
if it doesnt work the first time, repeat 4-5 times and let us know. it should work!