The Weekly update 21.10.27 has been officially released for Xiaomi Pad 5 (codename is nabu). 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: Xiaomi Pad 5 ROM Topics Xiaomi Devices Index
Download Mi pad 5 (nabu) China MIUI 12.5 21.10.27 Recovery ROM with Android 11.0. Firmware size is 3.4 GB.