I really would have posted this much sooner, however, this particular method was being kept secret with the intention of the exploit still being available upon US Jelly Bean release. Since this has been outed, and is now public, i will share a more proper script of the same method. I actually kept the adb shell id command, as it is pretty useful for this operation.
Main differences in my script is that you don't need to ever disconnect your phone.
1. Unzip the zip file
2. Make sure USB Debugging is on, and your are in Charge only Mode
3. Run the CurrentRoot.bat, wait for the prompt
4. Change to MTP mode.
5. Wait for your computer to ask how to view files.
6. Press enter in the CMD prompt to continue.
This is a fully working method for the most current US/Canadian releases, and Jelly Bean releases. BTW, the current release does not install busybox correctly, includes SuperuserPro.apk (which I'm sure wasn't purchased by everyone downloading this). Also I have updated it to the latest busybox, su binary's, and Superuser.apk available.
I can't thank you enough.... I got my Optimus G in Dec. and I immediately found root method and was completely content with my new phone. Then came the dreaded OTA update that I knew would remove root. I avoided the update with determination. I shouldn't have let my goofy sister touch my phone... After our got it back from her I realized I wasn't receiving the update reminders. I panicked, checked root, root was lost! I began searching everywhere only to find that there was no root for zv9....For weeks it was the same. Then yesterday I found your method, fired up my laptop and within 5 minutes my LGOG ZV9 on Sprint was rooted again! Thanks again. I can't tell you how much I rely on my free wifi tether.
---------- Post added at 01:04 AM ---------- Previous post was at 12:53 AM ----------
I re-rooted my LGOG after the OTA update to ZV9 robbed me of my original root. It only took about five minutes and worked flawlessly. Well tonight I tried to root my girlfriends phone (also a LGOG running ZV9 on the Sprint network) and although it ran through the process just as mine did, as well as stated root was successful, when I run root check to confirm it comes back negative. What am I doing wrong? Any ideas? Thanks