R4 Micro Chip

SephYou download the firmware and simply put it in the root of your MicroSD card, overwrite any files already there.

R4's store the firmware on the MiniSD Card? Well I dont know about them, I use super card the the basic idea is the same: get ROM (depending on card: Patch Rom), put on card, put card in there and run ROM. New ROMs need F/W update.

But there's no firmwire for r4..

Then you didn't look carefully enough.

Replying to #23

Ohh..that's what you meant. >.> I already did that long time ago..

If you did it long ago then perhaps it got updated?