thanks for your replonse. but now another issue im having, when i zip it, the system img and boot img go inside the meta inf folder? or make a new folder containing the two img and the meta folder?
if lg releases new update
then you can download the kdz and make a zip which can be flashed through cwm without loosing the recovery or unlocked bootloader status.
your back up will give you only the original version you have backed up not the new released version.
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