Lenovo b600-h hang on logo flash by amt dongle
 

Waiting for mediatek usb device...
MediaTek PreLoader USB VCOM (Android) (COM10)
Brom protocol configuration start ...
Brom successfully configured [MT6589_CA01_0001]
Uploading download agent to target
Download Agent successfully uploaded
Getting Boot information...
Storage : EMMC
UA Size : 14.56 GB
DRAM : 1.00 GB
SRAM : 128.00 KB
Boot1 : 2.00 MB
Boot2 : 2.00 MB
Rpmb : 128.00 KB
RNID : 28F3BE1931C2FE14828C5528060C4B08
Emmc Cid : 1501004B385530304D04A4B0DA5B6145
Emmc Oem : K8U00M
Emmc Vid : SAMSUNG
Note : Firmware Partition table not match device PMT
Rebuilding Partition Management Table (PMT)...
Writing Firmware to phone ...
Write Flash Success
Rebooting phone ... OK