Mine keeps staying at loading screen. This isn't my crappy flashcart, I am putting on games for a friend. But it keeps getting stuck at loading screen. I am using DSlite.
Because R4's aren't the best flashcart like the original one was... They like to corrupt files as well.
you are probably using the wrong FW, find the correct one (look at the box for a website link) and I use R4i, it worked with every game except TWEWY but I have a r4 too (FW 1.18 I am not sure it is original) and it doesnt freeze when you pass that guy in the beginning I can play every game I want with r4s!