Yes. Right now I'm outside, so cannot share a screenshot example, but look in the unit's hex block for his name in the text section. Some bytes after that (sorry, don't remember how many) you'll se a byte containing the month and another the day. Just change those two, and your birthday will change.Is it possible to modify the avatar's birthday through HxD?
I'll post a screenshot from an example un HxD later, maybe until tomorrow.