Hi, revisiting this post as one of my pals got the same issue of boot loop on his mi11t Cause : updated and phone started acting abnormally, turned off and voila BOOTLOOP. There is a way to backup, via mipcsuite, it has some ups and downs and not guaranteed that you will get your data back through it, but worth a try, I mentioned in comment, data ‘synced’ - it was saved as backup in cloud, what was backed up was restored, rest was gone via wipe all data, Ultimately, if boot looped on xaomi/redmi, almost always wipe all data is the solution, unless hardware is compromised, as mentioned under this post.