Wow if that is the boot0 pin that is cruel and unusual punishment. It’s so tiny.
It may actually be the correct pin but you may not be holding it high reliably - an STM board we designed had a boot0 pin that was so hard to hold high we changed the design so it was two plated thru holes you could stick a pair of tweezers in.
It is in the usual location for boot0 for that board though.
Just for fun can you ask a fellow student to let you try it on a windows box?
It may not really need to have the bootloader reloaded. I have never actually blown out an STM bootloader but I suppose it could happen.
This is the STM dfu utility that will at least tell you if it is in DFU mode, and let you update the bootloader if you have proper DFU file:
Only supports windows.
Also here is a link to the datasheet if you want to ohm it out:
Good luck!