Need to unlock the phone first.
Use “Init SecBlk” button to unlock the phone
Unlock done
After unlock you can flash the phone now.
Step1: choose the model
Step2: choose MCU or MCU + Modem (If your phone version is same of your flash
file, you can only select MCU)
Step3: “MCU” choose the language pack, “Modem” choose the version match “MCU”
Step4: Now you can connect the phone and press “GO” botton.