Need (a must):

- DSi with 1.4X firmware or lower (must not 1.4.1) or any DS Units.
- DSTT v1.15 kernel
- DSTTi 1.4.1X Fix (thanks to Pong20302000 for the UP)
- AC adapter
- Full charged battery.

-----

Instructions:

- Format your memory card and place the DSTT kernel provided above.
- Then place the DSTTi fix files in the root drive of your memory card.
- Plug the AC adapter on the outlet and plug it to your DS (charging indicator must be up.. since the battery tends to drain fast.)
- Place the memory card in your DSTTi and boot it up on your DS.
- Select the TTi update.
- On the first batch. It should check files (CRC check the files to be sure that the flashing will went well.)
*****Warning: Full charged battery and you plugged in the AC charger.
- Place it on your table for a while to avoid bricking your DSTTi.. since most of the cart tends to freeze when you moved them anyway.
- Then it will say that Press X+Y to begin...
- The update will erase the flash memory and its content (finished around 5mins)
- Then a programming will show up (10mins or more..)
*****My battery indicator flash a red color in this step.. but anyway.. its around 90% on that way.
- Then you will hear a fancy melody with a message that you successfully updated your DSTTi internal firmware.
- In this case.. you only have to do is to press any key to turn off. (dunno... but in my case.. it was just restarted @ DSi menu.. lol)
- Done.. you can now update your DSi.

--- ;D enjoy
--- btw: the CRC was changed this time... (bootcode of DSTTi... so that why it passes the check lol)
--- still using the old Star Wars Lethal Alliance.. as their bootcode

edit: changes made