Hi Experts,
Is it possible to change the ROM of my LG D800 with LG G2 India OS
why would you do it my friend?
If you do it....you will mess up the partitions, system files and only end up bootloop....or even soft brick the device.
BTW, the OS is the same except Baseband, carrier specific, region specific and a few more things....
but you can get the best of the G2 ROMs for your device too....just need to search in the forum.you will find a lot of ROMs for your model of G2.