Also it should be noted that devices like FPGAs allow for directly altering certain hardware structures via software. In these cases it can actually be possibl

Also it should be noted that devices like FPGAs allow for directly altering certain hardware structures via software. In these cases it can actually be possible to fix a hardware bug (or add a hardware feature) via software, where the hardware itself actually gets fixed (ie its not just firmware working around an ongoing hardware constraint).