Samsung J400:
Here is log:
Wait for the BOOT signal ...
Send the Download start signal ...
Wait for the Download start ACK signal ...
Uart Download Mode OK.
Setup Boot Loader ...
Transfer Boot Data...
Reading Device Info ...
Flash ID: [ KAP29VN00M ]
Phone SN: R3YPC18295
HW Ver: MP 0.700
BTID: 001E7DDE26A4
NCK #7465625*638*81747096]
SCK #7465625*782* 00000000]
SPCK #7465625*77*00000000]
CPCK #7465625*27*00000000]