S3802 flashing failed

I have phone with imei 0049xxxxxx and tried torepair but ineed flash firmware from support



this is the log



Welcome to Octoplus/Octopus Box Samsung software version 1.4.6

Selected firmware file: S3802DDMC3.oct

-----------------------------------------------------------------------------------

Platform: Samsung Infineon

Selected model: GT-S3802

Selected port: USB

Phone must be OFF, and battary must be fully charged

Please, connect USB cable and reconnect battery.

Connecting...

Phone found.

Sending loaders...

Sending preloader...

Preloader send successfully

Sending mainloader...

Mainloader send successfully

Writing firmware...

Erasing Full Flash...



imediately after this software stop and I can again click on writing firmware



where is the problem, drivers was installed

via Welcome to gsm-tips http://ift.tt/1hWZpH3