Hi,
I see your posts and I will try to help you.
First, to working well with Joker, you need to have derial data cable or USB to Com cable . Not working with native USB cable.You need to have cable model CA-A31
Second, because you need after fullflash to unlock your phone, need to cut way (make testpoint).
Third, to make fullflash backup, go to the "Flash" menu, check only "FullFlash" and click on the "Read" button. To flash your phone (included bootcore area), check "FullFlash" and "ReCalc Keys", nothing else. Click on "Write" button, select fullflash file and wait....Time for flashing process is maximum 45 minutes and flashing bar need to progress in time.
dagos