Install EU Rom in Xiaomi 12S Ultra


Hi I have a Xiaomi 12S Ultra and is not global version , I would like to change the Room into global version .can you please advise step by step , starting with the files downloads up until last step
 
First you need to unlock the bootloader. Since you have a Chinese device, you need to find a paid online service (for example nculock) to unlock the botloader.
Once you have the boozloader unlocked, follow these instructions:
 
First you need to unlock the bootloader. Since you have a Chinese device, you need to find a paid online service (for example nculock) to unlock the botloader.
Once you have the boozloader unlocked, follow these instructions:
I need a paid online services nculok is there any thing to download or apply
 
Hi I have a Xiaomi 12S Ultra and is not global version , I would like to change the Room into global version .can you please advise step by step , starting with the files downloads up until last step
Can you please share a video on how to do .
I'm not much into this things