The listing, DIY Galaxy S3 (Sprint) Root has ended.
This is a step-by-step guide to root your Galaxy S3 (Sprint) SPH-L710 Running on Android 4.1.2 Jelly Bean Firmware
---------
Compatible devices if you want to try to root them <- Use at your own risk-
Android
HTC G1, Hero, One
Samsung i5800, i9000*2, P1000*2, P7100, i9100*2, N7000, P6800, i9300, N7100, i9505, N9005
Sony T LT30p, Z C6603
Nexus Galaxy*2, N7, N10, N7-2013
SuperSU, Mobile ODIN, TriangleAway, DSLR Controller, CF-Root, 500 Firepaper, USB Host Diagnostics, ExynosAbuseAPK, Live dmesg+logcat, NoMoarPowah!, CF-Bench, Chainfire3D, CF.lumen, SGS2 SIM Unlocker, GingerBreakAPK, SuperPower, and more!
Windows Mobile 5/6
E-Mobile EM-ONE
HTC Wizard*2, Kaiser, Touch, Diamond, Pro, HD*2, Diamond 2, Pro 2*2, HD2*2
Samsung i780, i900*2, i8000*2, b7300, b7320, b7330, b7620*2, b6520
WMWifiRouter, KaiserTweak, FPUEnabler, WMLongLife, WMRegOptimizer, CFC+GUI, TF3D+v2 ports, Kaiser+Omnia2+Snapdragon 3D drivers, GfxBoost, and more!
Windows Phone 7
LG GW910
---------------------------------
DISCLAIMER: ROOTING YOUR PHONE WILL PROBABLY VOID YOUR WARRANTY FROM BOTH THE CARRIER AND THE MANUFACTURER. IF YOU DO NOT WISH TO ACCEPT FAULT FOR ANY ADVERSE EFFECTS OF ROOTING, THEN DO NOT proceed to bid on the instructions.
I am not liable for bricked phones use at your own risk.