Got the mset now working for my euro N3DS, but successful launch rate is only about 70%. But this was also the case when i used GW's rop to launch their loader. Maybe my N3DS is cursed.
Reinand gave me blackscreen when tried to booting into sysnand (i know that this isn't supported at the moment), so i created a emunand with GW, now it works. I installed 3 cia's so far: bigbluemenu, 3D Outrun and Star Fox 64. Star Fox get's imported successfully, but the game dosen't show up in sys and emunand. Outrun works, but both, Outrun and Bigbluemenu always appear in gift boxes when i boot in emunand, any way to fix this?