install another firmware with different model

Hi
I really need some help here
I have S5 sm-g9009d ( chinese, and I dont live in china ) so i cant use google services or 3G , and i want to turn it to international
i cant find any custom Roms for this model , and all the official firmwares are chinese , so can I install an international firmware for a different model? can i hard brick my phone ? and if something happen cant I just flash back the original firmware ?

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