The Stable update OS3.0.3.0.WONCNXM has been officially released for Redmi K80 Ultra (codename is dali). 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: Redmi K80 Ultra ROM Topics Xiaomi Devices Index
Download Redmi k80 ultra (dali) China HyperOS OS3.0.3.0.WONCNXM Recovery ROM with Android 16.0. Firmware size is 8.0 GB.