Delete TWL with FBI first (the title ID can be found in the title list at 3dbrew). Then install the .cia.
@Tony_93 TWL_NAND is used for ANYTHING DS related. DSIware or carts. The patched one will allow the blue card to work. The patched TWL will allow cards to work that the bluecardfix/flashcardtimewarp won't even fix.
By the way, you need sigchecks patched to install a modified file (patched TWL_NAND) so you need to boot a CFW into sysnand, THEN boot HBL via browserhax or whatever and use FBI to install it. (use FBI.3dsx to install FBI.CIA into sysnand while you're at it).
EDIT: Maybe... without the bluecardfix or flashcardtimewarp, the blue card won't show up, but with those installed, you can make them work with
@Apache Thunder's TWL launcher.