Below you’ll find download links for currently available Xiaomi Mi5X Custom ROMs, which include Android One OREO port, different multilingual ROM versions, latest version of RR, AOSP Extended and Blur for Mi 5X. Make sure to check your device exact version (Tiffany, Oxygen or Tissot) before installing Custom ROM.
Android Custom Firmware for Mi 5X (Tiffany, Oxygen, Tissot)
Tiffany version | XDA Thread | Developed by: ghpranav | Android 8.1.0
Unofficial port of Resurrection Remix Oreo v6.0.0 for Xiaomi Mi 5X. Seems like a pretty stable ROM. We didn’t noticed any crucial bugs. If you’re going to test this ROM, please share your experience in the commends.