I used 0.4b last night on a new 3ds and upgraded my Emunand to 9.5.0-22 USA, you downloaded the wrong files in 3DNUS.
But other users have verified that they used the same files but used sysupdater 0.4 ....... And they soft bricked...... This is confusing....
make_cia is crashing on my computer. I'm on a 32bit win7 I'm wondering if I need to be on a 64. Do you know if there's a decent exe floating around. I've got some pretty cool Japanese eshop titles that are begging for a release
Try Windows 7 x64.