Fix internal storage if 32GB now shows 16GB??

I have one tablet gpad 10.1 32gb ram 1.5gb v700n limited edition LG distributor in Korea. it does not have android version 5.0.2. 32GB version losing half their storage after flashing 16gb KDZ version 5.0.2 v70020a_00.kdz . now it becomes the device that fixes 16gb way ??

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