Hisense MTK5657 Service Manual page 29

Open "Device Manager" and find which port is connected with the TV. In above picture, COM4
is connected to the TV, so, select "COM4" and if COM6 is connected to the TV, so select "COM6".
Select the right baud rate according to chip model. For this unit( chip model is MT5659), select 115200.
2、power on the TV ,then Click
from red turn green
Click , bounce the following dialog box. Load Bin File：find the upgrading
program file, his_m1v1_us_secure_emmcboot.bin.
to connect，if connect successfully then button
.
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