How to Flash Custom ROM Havoc GSI 3.1 Android 10 Q on Samsung Galaxy A50 SM-A505F. Havoc comes with ROM OS Android 10 Q. ROM Firmware Required: TWRP Recovery. Version Information Status: Stable GSI ROM Havoc-OS-v3.1-20200111-ARM64AB-GSI. To install this Custom ROM, your phone must be installed TWRP Custom Recovery. Use at your own risk, I’m • Read More »