What happens when I install the same title but different region?`

Nothing, they are recognized as two different games and one won't overwrite the other.
I can confirm this because i have installed Donkey Kong Country Tropical Freeze both USA and PAL, because one was modded and the other not

 

They will work both cause they have different title ids

 

But I thought you can brick your console for installing Brazilian method games that are from different regions than your console?

 

That was a rumor that was spread when the method first came out. Please forget that BS since everyone was too scared to try it.

 

So I tried installing a eur game on my us console. In mocha, I get an error about the usb not receiving enough power even tho every other installed title works. On sysnand I get an error about the region being incompatible, and ourloader seems to not want to launch to system menu and only works with discs.

How did you get it to work?

 

I just installed the title. It worked from both USB and NAND using cbhc/haxchi's cfw

 

I don't have any DS VC so i guess I'm outta luck here? I'll try and see if I just have a bad dump and try something else.