Ender 3 BTT SKR Mini e3 v1.2 and BL touch won't update

I downloaded the .bin file onto micro sd. Tried installing both directly to the motherboard micro sd slot, and to the USB port on the usb adapter on the upgraded BTT tft35 screen. It just boots up with old Marlin.

Any suggestions?

update: the firmware needs to be renamed “firmware.bin” or the motherboard won’t see it.
the BLTouch doesn’t seem to work though. Will try again.

just an update: it did upgrade but will not print anything. WHen I try to initiate a print, it says there’s a problem with BlTouch, to fix it, and start w/M999.

I’m new so I don’t know how to proceed. Can anyone help?

Your best bet is to check the BLTouch FAQ

If the probe extends, but isn’t detected, your issue is with the black and white wires.

If the probe doesn’t extend, its a problem with the other three.