The Stable update OS2.0.5.0.VLTCNXM has been officially released for Xiaomi 12S (codename is mayfly). Before updating, please make sure you have downloaded the exact ROM matching your Xiaomi phone/tablet. In Fastboot mode, you can check model code by typing fastboot getvar product in cmd/shell.
The firmware files posted here are all official Xiaomi MIUI or HyperOS ROM, xiaomiROM.com do not own and never modified those firmwares，you will always download the file from Xiaomi server.
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Download Xiaomi 12s (mayfly) China HyperOS OS2.0.5.0.VLTCNXM Recovery ROM with Android 15.0. Firmware size is 6.5 GB.