New local MIUI.EU ROM: xiaomi.eu_multi_HMNote9ProEU_V12.5.5.0.RJZMIXM_v12-11.zip
https://sourceforge.net/projects/xiaomi-eu-multilang-miui-roms/files/xiaomi.eu/MIUI-STABLE-RELEASES/MIUIv12/xiaomi.eu_multi_HMNote9ProEU_V12.5.5.0.RJZMIXM_v12-11.zip/download
Here are all official ROMs for XIAOMI: https://xiaomifirmwareupdater.com/miui/
Latest for for 9S is https://xiaomifirmwareupdater.com/miui/curtana/stable/V12.5.4.0.RJWMIXM/
There are two ROM versions in yhe link:
fastboot version ->...
Fastboot ROM versions are no longer supported (the only reason for their existence was that at first there was no TWRP). The standard is recovery ROM.
Install TWRP / Orangefox and recovery ROM version .
See 1st post here...
Download ROM 15.5.4 file: https://sourceforge.net/projects/xiaomi-eu-multilang-miui-roms/files/xiaomi.eu/MIUI-STABLE-RELEASES/MIUIv12/xiaomi.eu_multi_HMNote9ProEU_V12.5.4.0.RJZMIXM_v12-11.zip/download
Install it manually from TWRP (make Dirty flash).
Thanks for info about bad link.
My repaired link: https://sourceforge.net/projects/xiaomi-eu-multilang-miui-roms/files/xiaomi.eu/MIUI-STABLE-RELEASES/MIUIv12/xiaomi.eu_multi_HMNote9ProEU_V12.5.4.0.RJZMIXM_v12-11.zip/download
Link to atest local MIUI.EU ROM based on Android 11 is 12.5.4.0 ->
https://sourceforge.net/projects/xiaomi-eu-multilang-miui-roms/files/xiaomi.eu/MIUI-STABLE-RELEASES/MIUIv12/xiaomi.eu_multi_HMNote9ProEU_V12.5.4.0.RJZMIXM_v12-11.zip/download