hello all. i recently bought a r4 from a used games seller in my city and cant seem to get it to work. it is the original r4 not knock off. ive tried many different firmwares but all end up the same stuck on the loading screen. the card only says r4 Revolution for DS (NDSL/NDS) i am trying this on my ds lite which is using a newer card that works but it will eventually be used by my dsi. can someone please link to the proper firmware