CH341A flash gets stuck on Asrock X370 Killer?

Don’t know if this is the right topic, but I’m trying to flash a bios to an Asrock X370 killer motherboard using a ch341 usb tool. I think I’m doing it right but when I try to “Unprotect” the chip and go through the flash process, the process stalls, even though it should only take “around one minute” can someone help me move on with the process?