Is there a way to force boot to bootloader in HYPERBORING TKL Y&R80 PCB?

[Saberre]

Hi, I'm using a Y&R80 PCB customized for HYPERBORING TKL.

I want to build and flash my own version of keyboard firmware, but it seems that the PCB doesn't have any physical reset button.

Is there any way to force boot to uf2boot bootloader?

I can just see the 4 holes for debugging purposes.

It would be great to know the method in case something goes wrong.

Thank you!