Easy method
use modified usb cable without battery
go to mstar tab
untick auto detect pinout
tick read or write
insert modified usb cable
port refresh
run
if you no have modified cable,use normal usb cable with boot key or open phone see in mobile pcb solder boot point in gnd
enjoy volcano box
videocon v1548,v1570,v1580,v1546
Also zenm72i and many more mstar phone