I didn't want to make a second thread in two days, so I'm gonna try posting in this thread.
I'm trying to get to Gateway Mode on my 4.4U 3DS (GW version Ultra 3.0.4). I can access the Gateway Menu just fine via the DS Profile exploit, but any time I choose Boot Gateway Mode or Boot Classic Mode, the system hangs and I have to hard reset.
The red card is inserted, and has a 32GB Sandisk Class 10 microSD card in, formatted exFAT.
The SD card inside my 3DS is an 8GB Sandisk Class 4, formatted FAT32. It has the 3.0.4 launcher.dat on it.
I have updated the Gateway successfully (and forced another update by holding R when launching the menu).
I have formatted my emuNAND multiple times (and have backed up my sysNAND to my PC, don't worry!)
I have run diagnostics on the red card, everything came back green.
Any ideas?
I am not a 4.x user but have a few things you can try.
1. Format the SD card with SD Formatter v4 from SD association. It's free and the official way to format Sd cards. This will wipe out emunand so you will need to reformat that.
2. Do you have a better class SD card or mSD card with adapter you can try? People seem to have problems with class 4 cards.
3. Use a different card reader on the PC? I discovered my card reader on my HP printer was malfunctioning and corrupting files. So I got an $8 usb reader from Walmart.
4. Is your 4.4 sysnand virgin or did you downgrade from a higher version, just curious. If you downgraded you could try upgrading to 8.1 with a retail cart and see if it works. Then downgrade again, maybe the downgrade got fubared.
5. Just thought of this, you can use yor 32 GB mSD with adapter for testing, the GW does not need memory to boot emunand.