1. Format TF(micro-SD card) first. 2. Download the F_core.dat file here and the SYSTEM file here. 3. unzip it, and drag that 1 file (F_CORE.DAT, its the upgrade file), and 1 folder (SYSTEM, its the software the M3 real needs to run on) onto your micro sd card. Make sure the file and folder at in the "ROOT" of the micro sd card, the very top! 4. Put micro sd card into the M3i 5. Put the upgrade cable into the M3i (the shinny side, i.e. the side with the ARROW on it should be facing the BACK of the M3i!) 6. Plug the USB port into your PC, or anything that has a port that will give it power 7. The M3i should blink for about 15~20 seconds. After it stops blinking, your M3i is enabled Note: LED blinks - in progress LED lights off - no power or complete LED lights on - error (no "f_core.dat" or wrong file etc.) Upgrade In Progress 8. Unplug the upgrade cable from your PC and M3, and then put your M3i into your DS/DSi, and it should be working p> 9. You can now delete the file F_CORE.DAT from the micro sd card as it will no longer be needed (its only needed to flash your m3i once!) 10. Download System file for M3i Zero. Unzip the file, copy the folder SYSTEM to the root folder of microSD memory card. 11. Insert the microSD into the M3i Zero and the M3i Zero to DS, DS Lite, or DSi game slot-1. 12. Switch on the DS and enjoy! The official website for downloads, files, etc --> http://www.handheldsources.net/M3DS/Download_M3DSR.html The official guide on upgrading, including pictures --> http://www.handheldsources.net/M3DS/Readme/m3i_upgrade_manual1.pdf
