the file loads but hangs on the yellow screen and says :the homemenu ropbin is ready" and freezes. what did i do wrong? powersave verison by the way. trying to downgrade so i can install cfw
Make sure you have the boot.3dsx on the root of your SD card. Also ensure that you injected the right payload.
If you've done both of those steps, just reboot. Homebrew's bootrate is not perfect, unfortunately.