How do you get the Platinum flag?

Question

Tips please.

Answer 1

It is pretty much impossible after GF shut down GTS.

But you have to go underground via the Explorer Kit and capture 50 flags from your Friends' Base
Here

Answer 2

This is easy but very time consuming

First
Get 2 of any kind of ds.

Second
Have at less 2 copies of either of Diamond, Pearl, or Platinum or one of each.

Third
Build secret bases right next to each other for easy access and keep a straight way path to the flag.

Fourth
Steal the flag 50 times and your done.

This took me sometime but in the end its worth it I guess

Source did this couple of times