Running:SAMSUNG: eMMC firmware update...
Confirmed eMMC Part Number: KMVTU000LM-B503
Z3X EasyJtag Box JTAG Софт версия. 2.0.8.4
Loading eMMC Addon Firmware... IO: 3300 mV
Box С/Н: XXXXXXXXXXXXX, ,Микропрограмма Вер.: 01.54
Напряжение подтяжки линии CMD :1804 mV
Напряжение активной линии CMD :2413 mV
Setup firmware update mode, wait 2..30 sec... 
Success!
Sending eMMC firmware...
Success!
Verifying eMMC firmware...
Success!
Flashing eMMC firmware...
Success!
Repairing eMMC CID...
Can't init device, Reason: OCR Ready Timeout Error [Check VCC or eMMC DEAD] 
Сделано.