How to use it on BK7231 of QFN56 ?

[rgbsky]

Hello, I have a BK7231 module with a 56-pin BK7231 chip on it. Can I apply BK7231GUIFlashTool to flash it? I tried but didn't succeed, thank you!

The BK7231 module (C-3031) information:
http://www.c-chip.com.cn/userfile/productPic/20181201111430.pdf

Details of this module：
https://pan.baidu.com/s/1IRIxz7l9G9fN-CyUcpFkKw?pwd=3pfq

SMD code is BK7231QN56B, does this belong to BK7231T or BK7231N?

[rgbsky]

Following the normal flashing steps,
I connected Tx, Rx, Gnd to the USB-TTL device and provided an additional 3.3V power supply.
Then, I turned off and on the power supply,
But it has been unable to enter the flashing state.