I flashed mine to CPH2581 (EU). So far works great. No problem at all. 5G works on Maxis and Yoodo. I don't see why DiGi wouldn't work.

if u buy OP12 Malaysia set, you will get with global ROM CPHXXXX and also E-sim function (Main difference). But no charger in package, need to buy separate.

if u buy OP12 CN set, you get free case and 100W charger. For the ROM, you have 2 options - to buy either set with original CN ROM (ColorOS) - PJDXXX or buy set which is flashed to Global ROM (OxygenOS) CPHXXXX.

Difference being:
CN set with ColorOS - comes with standard CN keyboard layout and apps (can be uninstalled), can install playstore and install/use google apps but Android Auto will not function and E-sim cannot be used.

CN set with OxygenOS - standard android apps and keyboard layout, Android Auto can function but E-sim still cannot be used.

CN set comes with 5g bandwidth module which is limited but still similar to Malaysia 5G bands so no issue so far with 5g (both CN and Global Rom). Only thing to look out for prior to purchase would be the region lock, which certain sellers in shopee does not cover nor tell you. If region lock activates then phone cannot use for local calls using telco network.

I think that about covers it, other sifu2 can correct me if i'm wrong..