If it's blank, it's not being read properly. Try cleaning the contacts.
Then go to System Options and on the bottom right corner of the top screen, it shows the firmware you have. If it's 1.4.1, then you should download the fix from here http://filetrip.net/file.php?id=12925
,put it on the microSD and run it by putting the cart in a 1.4 DSi, DSL or DSPhat and running the ndsfile you just downloaded.
If you do have 1.4.1 and you don't have a DSL , 1.4 DSi or DSPhat, your screwed.
If not, you have nothing to worry about, just don't update until you use the fix. But if it's Star Wars rebel alliance, it should be fixed already. An unfixed R4i Gold has the Danny Phantom icon AFAIK. Anyways, better safe than sorry.