RG200U how to enforce EDL mode?

Hi, i have an rg200u that accidenly enter into host mode and I am wondering how to force boot into edl mode so I can use qflash. The VDD-EXT pin is 11, but i cannot find the USB_Boot pin. or is there Test Points available?
Thanks in advance.

Dear @kaltmond
USB_boot is pin168.

Hi,
many thanks for the reply. Since the minipcie slot only have 52 pins available, can you kindly tell me the steps how to enter the EDL mode on this modlue?

Dear @kaltmond
Sorry for the late.
I have sent to you via Message, please check.