Keychron Q5 HE - tried to remap home and delete keys - neither work. Also...

Keychron Q5 HE - tried to remap home and delete keys - neither work. Also... Can not update firmware. I download the toolbox and get an .exe file - run as administrator as indicated but nothing happens aside from a list of options appearing in a dos window showing a menu with a list of options...

Thanks in advance for your consideration