First of all thank you for the support!!
Let me sum it up :
- no way to install fw upgrade downloaded from 3dnus
- fw upgrade in game carts don't include browser
- hoax using games aren't 100% sure and not cheap anyway (25/30$)
- update using SOAP server and hijacking traffic from the 3ds to nintendo server won't work (I'm 99.99% sure that they use https, so you can't fake their server certificate)
Think I'm gonna sell this useless crap and look for one with a valid firmware/browser combo..
