The following comes from SKY3DS official website: SKWY3DS
Sky3ds is the first flashcard in the world to play 3DS roms games on any 3DS console version, no 4.1 to 4.5 limitation, and it can work on 3DS 9.4.0-21 and play any 3DS roms games with no game limit. Here is the users instructions to tell you how to use sky3ds card on (new) 3ds (xl/ll) console to play 3ds games.
Buy new sky3ds card from Dsgameruk.com
Sky3ds is the first flashcard in the world to play 3DS roms games on any 3DS console version, no 4.1 to 4.5 limitation, and it can work on 3DS 9.4.0-21 and play any 3DS roms games with no game limit. Here is the users instructions to tell you how to use sky3ds card on (new) 3ds (xl/ll) console to play 3ds games.
Buy new sky3ds card from Dsgameruk.com
User Instructions
1. Please download the DiskWriter Tool to your PC, and you will get such a rar file;
2. Extract it into the same directory;
3. Run the "DiskWriterV100.exe" app as an administrator role; 
4. Before running DiskWriter app, you have to intall the ".Net FrameWork V4.0+" , otherwise go to step 5; 5.
After you installed the Microsoft .NET Framework, reboot your PC and
then re-open to run the "DiskWriterV100.exe" app as an administrator
role; 
6.
Insert a Microsd card with an adapter into your PC(WIN7/8 OS) , and the
option will appear "USB2.0 CARD-READER USB Device
(\\.\PHYSICALDRIVE1)", select it and then click the button "Go!" ; 
7. There will be a warning "The selected drive is not currently formatted for this application". Just click "Yes" to go on; 
8. "DiskWriter V1.00" tool is running normally should like below; Choose "File" ->"Format"; 
9.
Again, there is a important warning to inform you that " Formatting the
dirve will destory ALL information on it! Are you sure you wish to
processed? " , click "Yes" to confirm, then another warning inform you
once again, click "Yes" , 
10. Click "OK" after format complete; 
6.
Insert a Microsd card with an adapter into your PC(WIN7/8 OS) , and the
option will appear "USB2.0 CARD-READER USB Device
(\\.\PHYSICALDRIVE1)", select it and then click the button "Go!" ; 7. There will be a warning "The selected drive is not currently formatted for this application". Just click "Yes" to go on; 8. "DiskWriter V1.00" tool is running normally should like below; Choose "File" ->"Format"; 9.
Again, there is a important warning to inform you that " Formatting the
dirve will destory ALL information on it! Are you sure you wish to
processed? " , click "Yes" to confirm, then another warning inform you
once again, click "Yes" , 10. Click "OK" after format complete;
11.
Choose "File"->"Write" and choose your favorite 3DS roms and then
its will be written into your microSD card in a few minutes; 
12. After writing completed , insert the microSD card with Sky3DS into 3DS/2DS console to enjoy it.
12. After writing completed , insert the microSD card with Sky3DS into 3DS/2DS console to enjoy it.
