The Stable update OS3.0.305.0.WNICNXM has been officially released for MIX Flip (codename is ruyi). 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.
You may interest in those contents: MIX Flip ROM Topics Xiaomi Devices Index
Download Mix flip (ruyi) China HyperOS OS3.0.305.0.WNICNXM Recovery ROM with Android 16.0. Firmware size is 8.3 GB.