Nope to voiding warranty. However, if you send your car for update of software or ASS recoding.
All your previous settings such as the M Performance logo and etc will be wiped out of the system and you would have to repay to do it again.
A couple F30 bros have experience that already.
Did all the recoding, including the M Performance Logo.
Sent in car for recoding due to new Big Brake Kit.
Poof, all the mods you have done are wiped clean.