Installing CrossInk on locked X3

Just got the X3 from China. Unsurprisingly it's in Chinese. Not sure if it's different from the Amazon version but I can't flash the firmware on the browser. Chrome shows "no compatible device found".

The SD-USB dongle that came with it doesn't seem to work. Inserted the SD card but my computer isn't seeing it.

What's the next best step to replace the OS? Buy a working SD to USB adapter?