Launch the program
If there is no DC-Unlocker/Rocker/Vygis or Infinity dongle connected to PC, then log in screen will appear. Use your account details to log in
How to get Username/Password check here
DC Phoenix software window will appear
Select "Fastboot mode", open "APP Files" tab
Make sure you have HiSuite installed (but closed) on your pc, it will be necessary for latest device drivers
Connect phone in fastboot mode. Power down mobile device. Hold Vol- and connect phone to usb cable, this will enter fastboot mode.
Note: remove SD card from mobile if there is one inside.
Press paper icon next to "Update file" field
Select update.app file for flashing. Click "Open"
Now it's ready for flashing, press "Update" button (ignore deselected items in image below, flash with all selected)
Monitor the process
Wait for flashing to finish, when it's complete you will see message on program's memo window
Disconnect phone from PC and restart to end the process