Does Mi9 upgrade from MIUI 9.7.22 to 12.5 require a fresh install?

[ubeyou]

I'm still stucked with old ROM and planning to do an upgrade, does it require a fresh install? Or just update it normally?

Thanks

 

[geoorg]

You can upgrade but Backup your data and personal files before you do since your version is very old and a lot has changed since your version.
If moving to miui 12.5 stable, a data format is necessary

Latest TWRP for your device
twrp-3.5.2_9-0-cepheus-TeamWin.img