Topin zx303 who faced?

Question

satellite navigation

Actually there is such a tracker



https://aliexpress.ru/item/32998026851.html?sku_id...

Accordingly, I'm interested in how to remove nmea from it or start writing to a USB flash drive.
In different modes, it is defined as 2 disks or as a disk and com port , this port does not respond to anything or I do not know the magic command.

I dug up the documentation but I can’t download it yet https://github.com/johnyHV/MTK2503-DOCUMENTATION
Perhaps someone came across, in the first photo of the test pins they aroused interest, what is it?
Double pins on the connector or boot console?