Hacking If i put in an old R4 card in my 3DS XL with latest firmware, will it corrupt my R4?

[Metab.]

I have an R4 for a DS Lite and was tweaking some of it, can I put it in my 3DS, even if it doesn't work will it work in my DS Lite?

So essentually will it corrupt my R4 card or just not work on the 3DS?
Thanks.

 

[Rizsparky]

No corruption, it will just produce an error on your 3DS and kick you back into the home menu

 

[Syphurith]

It will just refuse to run. [Because old R4 has been out of update for several months]
The 3ds has no power to brick flashcarts, only men can do such a job.