Hello, Mi Fans!
Here's the full changelog and download links for V9.5.6.0.ODEMIFA for Mi MIX 2

Full changelog
  • Fix - Fix issue that the screen could not turn off, when playing video or making phone call. (04-12)
  • Fix - Fingerprint copy wasn't updated (04-12)
  • Fix - Fix the issue Camera FC (04-12)

Download links
Mi Mix 2 | V9.5.6.0.ODEMIFA
Recovery ROM | 1556M 7cd16f2cddf79408fea4e3e52865a75f
Fastboot ROM | 2042M b23c7d0dece4ecd62e0ac75aa3a4636a