Is there a way to rebind the share button on TE2 and change it into L3 to restart training mode?

Searched around and didn’t find much to work with. if anyone can help with a link to a thread or some info it’d be great.

IF a contact for L3 exists on the PCB (I’m not sure that it does), you can see if you can cut the trace for the Share button, and solder a wire between the old-Share button’s contacts, and the contact for L3 on the PCB.