What you will need to update your DSTTi Card:
* DSi Console with Firmware lower than 1.4X (1.4E, 1.4J, 1.4U & 1.4A) e.g 1.3 or 1.2 or 1.1
* DS Lite Console
* DSTTi Card Loaded with Official Standard Firmware V1.15
* DSTTi Update for DSi 1.4 Download
from here
To Check Your DSi Firmware Version:
* Click 'Setting' on the Main Menu
* In the right hand corner of the top screen it will say VER 1.X
STEPS:
1. Backup data of the TF card, then format it.
2. Download the official ttmenu v1.15, and unzip it on TF root folder.
3. Unzip 'DSTTi_v1.4_firmware.7z' you will then have three files: rom_pcb1.dat,rom_pcb2.dat,TTi14UPGRADE.nds
4. Copy the three files to the root of the Micro SD memory card.
5. Place the Micro SD back into the DSTTi Card and insert into DSL/DSi Console
6. Select the Firmware file TTi14UPGRADE.nds
7. Follow the on screen instructions to complete the rest, which should not take long.
Note:
* Must be running TTi14UPGRADE.nds on The Official Firmware TTMenu v1.15
* Unzip Tool 7-zip v4.65 for windows, offical link www.7-zip.org