How to Flash Custom ROM Havoc-OS 3.5 GSI ROM Android 10 Q on Samsung Galaxy A50s. Havoc comes with ROM OS Android 10 Q. Installation Require: TWRP Recovery. Version Information Status: Stable GSI ROM, Last Updated 2020-05-07. To install this Havoc-OS-v3.5-20200507-Official-arm64-ab, your phone must be installed TWRP Recovery. Use at your own risk, I’m not • Read More »