Xiaomi Xiaomi 12S Ultra with codename is thor Firmware includes Global Firmware (Global ROM), China Firmware (China ROM), Stable MIUI and Beta MIUI. This is full list of Xiaomi Xiaomi 12S Ultra. Xiaomi Xiaomi 12S Ultra may called with other names like
2203121C. China ROM, Firmware is for China region, there are only English, Chinese and No Google Services. Global ROM, Firmware is for Global region and almost can flash for China phone with unlocked bootloader. They have multilanguage and Google Services, china apps removed. All file download from XiaomiFirmware is Free. Fastboot firmware, ZIP firmware is official from Xiaomi. EU ROM, TWRP and Other files is unofficial. Use at your own risk.
An open source update site that provides stock ROMs provided by Xiaomi company. It supports Global, Europe, India, Russia and China regions. From MiFirmware.Com, one can download the latest updated firmware file for any Xiaomi, Mi, Poco, Redmi device model new or old. it’s completely free