HavocOS v4.24 Revived Flashing Guide :
Sai Krishna ➹Clean Flash Mandatory:
Back up your data because internal storage will get wiped out !!
Guide for people using fw12.5 based roms
Clean Flashing:
Open Recovery.
Wipe > Advanced Wipe > Cache, Dalvik, System, Data, Vendor.
Flash ROM.
Flash this Recovery.
Reboot to Recovery.
Wipe > Format Data. (Type Yes)
Reboot to System.