[Q] from SEA (32) to EU (16) ? topic

Hello

I have a lG-D855 32Gb Model (V10k-SEA-XX)
I want to pass to an EUR Stock (Europe Common 16G D855 10A_00.kdz for example).

But what about the 16Gb and 32 Gb ? will It be compatible ?
With LG-G2 it was possible (16gb --> 32gb), but the 2 models had the same amount of RAM.

In this case, there is'nt the same quantity of RAM , perhaps the ROMS are optimised for 2 or 3Gb of RAM ?

If someone already did it, can you tell me if it was OK ?

Thanks in advance and Merry Christmas !