I have an Australian (Telstra) LG Optimus G it is rooted however I cannot unlock the bootloader.
I have tried FreeGee donate version I have also tried GooManager.
FreeGee (Your device currently isn't supported).
GooManager (No recoveries found on your device)
Root checker says I have root access.
When I type in su in Terminal emulator it says [email protected]:/ #
Here are the details:
Model Number: LG-E975K
Android ver: 4.1.2
Kernel ver: 3.4.0
Build Number: JZO54K
Software ver: E975K10b-505-01
Hope the info I have given you helps.