Can not startup/reset coowell tv box


Novice Member

I have Coowell v2 tv box, that suddenly stopped, when it startup it stucks at the logo appears at startup. I tried to hard reset but discovered that the box does not have reset button… I opened the box and checked the board, no reset button installed. I tried to flash it using amlog usb tool, I imaged it with a new firmware. When I turn it on, it stucks at the logo. I’m trying to flash it again but no computer/no usb cable can detect the tv box, even I tried several almog usb tool versions with no luck, can anybody help please.
The emmc chip is KLMAG4FE4B-B002.


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