The Stable update V184.108.40.206.PFBMIXM has been officially released for Mi 9 SE (codename is grus). 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 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: Mi 9 SE ROM Topics Xiaomi Devices Index
Download Mi 9 se (grus) Global MIUI 11 V220.127.116.11.PFBMIXM Recovery ROM with Android 9.0. Firmware size is 2.5 GB.
Download Mi 9 se (grus) Global MIUI 11 V18.104.22.168.PFBMIXM Fastboot ROM with Android 9.0. Firmware size is 3.9 GB.