Upgrade r4 to higher version

Um hi!
I own a r4 and its version is 1.11
I want to upgrade it so games like summon night and final fantasy rings of fate work.
But i am wondering: wat will happen to my save files???
will they be erased???

Download the latest firmware from http://www.linfoxdomain.com/nintendo/ds/, extract it, then just overwrite your previous firmware files with the new ones(if it has any on it of course) or just put all of the files inside the english etc folder straight onto your MicroSD root, the place you are in as soon as you browse it. No, updating your firmware will not do anything to your save files or any other files other than the firmware files which are replaced.

question?
will upgrading my firmware let unplayable games work?

Yes, that's the whole point of firmware, as well as extra features etc. If you've updated to the latest version and you still can't seem to load a game and play it properly, wait for new firmware.

andajones, i have ur cheat topic
could u use the cheats in r4

Yes.

ok
thank you very much

Read this for a tutorial on how to add them. https://www.romulation.org/forum/index.php/topic,7694.msg78017.html#new