How much should I wait thecommand? I think sadly something isn't working because it's some minutes I'm waiting here...Code:fastboot flash recovery twrp.img
twrp flashing command usually takes 2-3 secs to execute. Pls check if your bootloader is unlocked, and if yes, pls check if you have the right twrp (for Redmi Note 7, codeword: lavender), etc. as per the first post of this AiO.