How to Install Havoc OS 3.7 on Symphony Z28

Havoc-OS 3.7 for Symphony Z28:

Havoc OS is a highly customizable custom ROM based on Android open Source Project (AOSP). the ROM offer super Material design, good customization and smooth Performance on almost all Phone running on at least 3GB of RAM. You can Install this ROM on your symphony Z28 by following the below instructions.

Symphony Z28 Run on Android 10 & it is Powered by Mediatek MT6757 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 3GB of RAM and 32GB of storage that can be expandable via SD card.

Note:

  • it will erase all your data including Internal storage
  • 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 Symphony Z28:

  • 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.