I haven't had any negatives in going to Jelly Bean. It makes my phone run so much nicer.
Here is the link to the OP:
[ROM][ODIN][TAR]SPH-D710BST GC01 (GC01 Modem/Kernel/ROM - Root/Stock)
Now if you are using a windows PC (which you should be to enjoy the ease of the One Click) then you need to ignore these two sections in the Op's instructions.
Mac/Linux -
Install 7-zip, then use it to unpack the individual ODIN components in Reference Section B (below). If Heimdall fails flashing all 3 files together, try doing them individually. Skip the remaining instructions that are windows specific (steps 3, 4, 6).
Android -
Install ZArchiver, then use it to unpack the ODIN OneClick 7zip self-extractor file in this section (long press *-oc-sfx.exe, Open as archive, Odin-OC, select *-OneClick.exe, Extract). Use
Mobile ODIN to Open File the resulting *-OneClick.exe file.
Mobile ODIN issue - modem might not flash consistently. Skip the remaining instructions that are windows ODIN specific (steps 3, 4, 5, 6).
Those two are for someone that is not using Windows..
Please note that the link in the OP to the repository where the file is, was down when I tried it a moment ago. If it doesn't open the site, try again a little later.