I'm having some issues:
-CIAs will install, but give me a "The SD card was removed" error. If it's on NAND, it'll simply tell me an error has occurred and return me to redNAND.
-7.x CIAs boot, but hang on the "Nintendo 3DS" screen. (I thought it hung because of encryption, but apparently not?)
The makerom commands I used were:
makerom -f cia -target t -desc app:4 -rsf <rsf> -romfs <romfs> -exheader <exheader> -code <code.bin> -exefslogo -banner <banner> -icon <icon> -o CTR-P-XXXX.cia
I replaced the <*> accordingly. -desc app:1 and app:4 were both attempted with the same results. Any suggestions?
Also something neat:
Games not of your region will not show up from the Home menu, but will show up on DevMenu and boot fine. (Tested with New Super Mario Bros. 2 + 10 DLC on a USA 3DS)