How to Install Havoc OS 3.7 on UMIDIGI BISON

Havoc-OS 3.7 for UMIDIGI BISON:

unofficial Havoc-OS 3.7 ROM Now available for the UMIDIGI BISON & You can Download it from below. This is a GSI Firmware which is smooth and Fast.

UMIDIGI BISON Run on Android 10 & it is Powered by Mediatek MT6771 Processor. it is a dual SIM (GSM and GSM) smartphone support Nano-SIM cards, connectivity options Include Wi-Fi GPS Bluetooth NFC USB OTG FM 3G and 4G. The device come with 6GB of RAM and 128GB of storage that can be expandable via SD card.

Note:

  • Flashing the ROM will erase all Your Personal Data including Storage. So we advice You to First take a Complete backup of your Phone.
  • Please Do carefully, We are Not Responsible for any Damage to Your Device.
  • Ensure that Your Device at-least 50% Charge During Flashing Process to Prevent accidental Shut Down.

Pre-Requirement:

  • Download Treble Checker APP From Play Store
  • Open Treble Checker app and Check for Correct Image type and Architecture

Download Links:

How to Install Havoc-OS 3.7 on UMIDIGI BISON:

  • Download & Extract Platform tools
  • Download and Extract ROM File in Platform tools folder
  • On Phone Enable usb Debugging and oem unlock From developer option
  • Connect Phone to PC using usb cable & Open CMD in Platform tool Folder
  • then use below code to Perform target action

type below code to reboot Phone in bootloader

adb reboot bootloader

type below code to unlock bootlodaer:

fastboot flashing unlock
any error
fastboot oem unlock

type below code to flash GSI ROM:

fastboot erase system
fastboot erase userdata
fastboot flash system system.img

Reboot

fastboot reboot

How to Install Havoc OS Via twrp:

  • Download Extract GSI.img to device Storage
  • Reboot Phone to twrp
  • Make a Nandroid backup
  • Select Install then Install Image
  • Locate & Flash System.img in System Partition.
  • Go back and Reboot System Now.