As found in lenovo forum posting here Credits to KAKA developer.
6.1.30 Update log:
1: Synchronous update to MIUI Developer Edition 273 weeks, the specific reference MIUI official update.
2: removal meters depth sound effects (the removal of switches and effects), solve MAXX Audio and rice tone conflict, MAXX sound implantation.
3: Uncovering MIUI system installation of local APK10 second limit, installed directly.
LINKS Will be updated after uploading to google drive.
Install instructions
1. Install Latest custom recovery (TWRP 2.8.7.4 recommended).
2. Copy custom ROM zip file to sd-card (external).
3. Boot into recovery mode.
4. Now select wipe.
5. Advance wipe & select system, data, dalvik cache, cache.
6. Select install & select downloaded zip file.
7. Install success.