Here is a little tutorial for everyone who wants to flash the NDS with Wifime.
Preparation of your Supercard: You need at least Firmware 1.50 for your Supercard. So Download the right firmware and copy to your CF/SD and run it on your NDS / GBA. Flash your Supercard.
copy /b c:ndsndsloader.bin + c:ndsflashme.nds c:ndsflashme_patched.nds
Copy flashme_patched.nds to your CF/SD and put it in your NDS, but don't turn it on now.
c:ndswmbwmb -data wifime
The command window should stay open. If it doesn't you haven't a compatible Wlan card or haven't installed the NDS-driver.
Your Supercard should boot now in NDS mode, both screens must be activated. If only one is active, you've done something wrong (has the supercard the new firmware?) and check the list again.
After 100% is reached and you see something like success on your screen, everything worked and your NDS is flashed and you can switch it off. Congratulations!
Everytime you want to boot in NDS mode, you need to hold down ABXY when you turn your NDS on.
Don't forget to patch your commercial Roms with appropriate tools and you still need a retail game in the NDS-Slot (Mario 64 US doesn't work for many people, try the Metroid demo or any other game).
Homebrew software needs ndsloader.bin:
copy /b ndsloader.bin + homebrew.nds homebrew_patched.nds