As we know that 3DS firmware has been updated to 3DS V4.2.0-9, if you have updated your 3DS to this new firmware, your DStwo can not work on it any more. But today DStwo offficial site has released the DStwo new firmware V1.16 to support 3DS V4.2.0-9, you can update your supercard DStwo card and make it work on 3DS V4.2.0-9. In this post, i will tell you how update your DStwo with V1.16.
Before you do the update, you need to get DS Lite to do the update. you also can get a lower version DSi such as V1.43 or lower, to do the update. In this post, i am using my DS Lite to do the DStwo update, that's get it started.
Step2: Download the latest firmware DStwo firmware V1.16 Extract it and put the "dstwoupdate.dat" file in t he root of your sd card.
Step3: Put the DStwo flashcart and the SD card in the DS Lite console. Power on, the DS Lite will auto detect the update firmware and you will see "Update system Beta 1.15-1.16", then just Choose button "A" to start the update.