How did u update your GPS?
Yourself with disk or at dealer?
The fact that the GPS locked up is my hint that all is not well in this area.
I would lay that blame on them squarely at their feet and let them reprogram your system.
If in fact your ABS module is bad my boyfriend mentioned a low mile car like yours might have deposits within the module from not circulating the brake fluid by:
1) The car not being driven.
2) The brake fluid not being flushed.
The contacts within the module can be cleaned but Infiniti would most likely NOT take the responsibility to do that when it is far easier for them (expensive for u) to just swap out the ABS module.
Either way it is a warranty repair and u shouldn't have to pay for it.
Did you take a peek at your brake fluid level it should look like mine here filled to the max: