It uses "adb shell" as per rgabi88's log but in automation using "ULTRA Patch V1" app, as it contains adb in the zip. Manually you can do this via adb. Commands are in the log, and necessary files are inside the data.zip (and files can be replaced with the ones we use like in CM). You just have to modify the mounts, and skip steps, like installation of recovery.img, e-recovery (pvrsrvinit and pvrsrvinit2), libsqlite.so (which if not compatible can loose ROOT).
Build.prop can be modified manually as it is for LGKU one. Just find the lines. And skip removal of LGOnScreenPhone.apk also.
If someone succeeds doing this, he can make a FULL ROM with those MODS with inclusion of Governors, modules, OC etc.