Just for more clarity...
how are the correct steps?
Update (via app) my MiNote with 5.12.17_v7-4.4.zip, then reboot (or not?);
update a second time (also via app) with 5.12.17_v7-4.4.zip, then reboot;
update (via app) with 6.1.29_v7-6.0.zip, reboot and wait.
It's a correct way?