Let's start once again using pak rom. @roms please correct me where I do wrong.
Step 1.
Go to recovery mode. Perform factory reset and then clear cache.
Step 2.
Turn on the phone and enable USB debugging. Factory reset turns off usb debugging.
Step 3.
Make sure usb drivers for your phone are installed on your computer.
Step 4.
Turn off phone, wait for 1 minute, remove battery for 1 minute, remove sims, memory card and then put battery back.
Step 5.
Connect usb cable and go to download mode.
Step 6.
Open Odin 3.09.
Step 7.
Untick 'auto reboot' and tick AP and select firmware file.
Step 8.
Don't go any further. Folow upto step 7 now and post Odin screenshot here.