DR400G-HDII - GPS problem

[KoreanDVR]

Hi,

I've have DR400G-HD II camera with non-working GPS (no GPS led)
Although log says GPS start, but nothing else related to GPS

Originally it comes with 1.011E firmware
Than found on this forum custom firmware 1.014E (guess it was modified 1.014K firmware)
I've put 1.014E firmware, but it doesn't help to revive GPS, unfortunately

Is there any other ways to revive GPS, till i'll send it back in Korea?

By the way, battery were replaced, because original battery died after ~6months of using

Thanks,
Oleg