Good, the first thing you should know if the xiaomi is a global version, Chinese version, I leave you a link to download xiaomi firmware, I also leave you a link with miflash and another link in case you do not have the baypass arb4 loaders, you just have to download, unzip, copy the loaders and copies in the firmware folder and replace or replace it, so that miflash does not give you any error, the downloaded firmware must be either in C: or on the desktop of your pc, any questions write again .
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Loaders baypass arb4
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Miflash
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Quallcom driver
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Download firmware xiaomi
Remember that it is very important to know if it is a global version, a Chinese version, etc.