Anyone try modding Mi AX3600 to support 1GB or 2GB RAM?

I search "ax3600 1GB RAM mod" on internet,
found many people in china successfully modded their AX3600 with 1G RAM,
but I found nothing related here.

I did more research,
seems the easy part was replacing the RAM chip,
1G RAM Chip Model Num d9stq or d9swb, can't find anything about 2GB RAM.
the hard part was modifying the CDT to accepting the new RAM chip.

I have a spare AX3600, if anyone know how to modify the CDT
I am willing to buy those 1G/2G RAM Chip and have a go.
Thank you.