sorry for my bad English,
hello, I just tried your tutorial with my old3DS Japan region, and ended to my old3DS bricked (still supposed), because when I turned on my 3DS only appear black screen (appear like power off state), but the blue led lights is on. I also can't enter recover mode (up button + A button + L + R + power button), nothing happen.
originally I'm not using CFW (LUMA, A9LH, and other CFW), previously I only use GATEWAY flashcart, i've used Gateway until my GW firmware on 10.X.X-XX, when my original old3DS Japan firmware still on 4.4.X-XX JP until i saw this post, i want to re-use my GATEWAY to firmware 11.6
I'm following the steps (also download for Japan region from psxtools's website post #56)
until "3b: start sysUpdater and press 'Y' button , wait until it's done ...." I'm still not sure that whether I should start this "sysUpdater" in sysNAND OFFICIAL firmware mode or GATEWAY mode, but by what I got from previous step it's still in Gateway mode.
but when I enter the sysUpdater screen, there are a warning message in red color text "IMPORTANT: Don't run this in sysNAND Gateway mode or it will brick!"
I accidentally press the 'Y' button to downgrade in Gateway mode, and waiting the installation until its finished and turned off by itself
but when I try to turned on my old3DS it ended as black screen with blue led lights is on like what I described above before (also can't enter the recover mode) and I consider this as BRICK, but I have backed up my original NAND before (backup original EMUNAND using GATEWAY blue card after I bought my GATEWAY in 2014)
please help, is there any way to fix this? I won't do hard mod if possible (disassembly, soldering wire etc)