Is it possible to re-lock the bootloader after I installed MIUI EU ROM on my Redmi Note 11? I've never done relocking bootloader on custom ROMs, and this thought pops on my mind when I realized my banking app don't work with unlocked bootloader.
Your banking app can only tell wether or not your bootloader is unlocked as far as your rom is telling it. I suggest finding magisk/Xposed modules to make it stop thinking it is unlocked, similar to how one may fix gpay.