I've been wondering the about that too. I think that you don't need another micro sd card. I think that you just put your gba games onto the micro sd card in slot-1 device and use the boot slot-2 funtion like on m3 ds simply.
The EZFlash 3-1 does not use media cards for storage, it has 32MB of memory, files are copied to the EZFlash from a slot-1 device and then run.
I think it is possible to copy a gba game to the EZFlash and then play on just that game without needing the slot-1 device, but you can't change games without it.
The 3in1 expansion does not have any way of loading roms on it without a compatible slot1 device.
The EZF team have been kind enough to release their APIs to R4 and M3 team. To load GBA software onto the 3in1 expansion, I boot the normal way and then run a loader software that I found here:
This software writes the selected file into the 3in1 expansion Flash ROM. Once written, if the DSL is booted from slot2, the 3in1 will boot the loaded software even with the slot1 cart removed. The DSL can be powered off, and the cart can also be moved to a different DSL, and the software will be retained.
The software can also be used to enable the onboard RAM and rumble features of 3in1 expansion. Just make sure the reset flag is enabled in your R4/M3S loader before running the GBA loader.
Quote:This software writes the selected file into the 3in1 expansion Flash ROM. Once written, if the DSL is booted from slot2, the 3in1 will boot the loaded software even with the slot1 cart removed. The DSL can be powered off, and the cart can also be moved to a different DSL, and the software will be retained.
This is what I thought, one thing though, is it possible for you to load GBA games (and load straight away) from the R4 menu using the newer firmwares? I'm looking into getting the EZFlash 3-1, however I would much rather be able to load game straight from the menu rather than load an app first.
The current firmware (1.08) does not offer this. Future firmwares might, but I am only being hopeful.
IMO it is not too much of a hassle to use the GBA loader, it starts quickly and works just like the R4/M3S loader (looks like a console application though).
Yeah I know it's not much hassel, it's just it would be an advantage to using my slot-2 M3, anyway it seems I can't get one atm, kicktrading has them on back order and winsunx dosn't like me, whenever i try to login it throws me back to the homepage ¬_¬
Where did you get yours?
They are located in the USA and I must say they have decent shipping. I'm in India, and I ordered this a day after i ordered the R4 from dealextreme. I received the 3in1 in 10 working days, 1 week before i got my R4!
