Redmi Note 3. Need Help With Updates!

Feb 11, 2016
Hi everyone!

Just today bought Redmi Note 3 2/16 Gb. OS version is 6.1.11 Beta(MIUI 7 by, then I've became an Update 6.1.21, but it can't be installed. The full name of update: miui_hennessy_mam_global_6.1.21_b9d309c267_5.0.

So I have a questions:
1. Why it's not work?
2. Is there any chance to make updates without risk to make a brick from my phone?