can you turn an r4 to a cycloDS?? (just wondering)

can you turn an r4 to a cycloDS?? for example by changing everything inside the SD card?

lol no.

No. Each flashcart works differently than the other.

And, the CycloDS doesn't store firmware files on the MicroSD (only a configuration file). So there are no files for you to copy over. Some flashcarts that are close enough to each other can run other flashcarts firmware (sometimes with slight modifications) like the R4 being able to run the DSTT firmware.But the good news for users of the original R4 (and the M3 Simply). You can turn your R4 into an almost-Acekard RPG.
http://forum.romulation.net/index.php?topic=38948.0