Just installed A9LH on n3ds, couple of questions.

have you tried Holding R on boot? or even better removing the Bootmanager from your SD and holding L to boot sounds likes its conflicting

 

Yes they should be in the rei/aurei folder (whichever one)

 

firmware90.bin needs to be in the rei or aurei folder.

 

For swapping NANDs I can recommend this guide. Super easy to follow and it works perfectly.
You need to run Decrypt9 for that, just run it via homebrew launcher on sysNand or via arm9loaderhax (either switch out the arm9loaderhax.bin or start it via a bootmanager)

 

or me saying it lol

 

Yep, that is correct. Your AuReiNand installation will still point to the emuNand though (which is 9.2 after the swap). For auto booting the sysnand, you need to create a "updatedsysnand" file (without any extension) in the /aurei folder on your sd card. Also create a "installeda9lh" file there, just in case. Then it should auto boot your new sysNand aka ex-emuNand which is 10.7.

 

Oh and I forgot to mention it earlier, for decrypt9 to work, you might need a slot0x05keyY.bin on the root of your sd card, you can find a link to that in the guide you posted earlier.
Also, you can find the "Dump CTRNAND" option under "Sys/Emunand options" -> "Partition Dump" in Decrypt9 and the Inject CTRNAND in the respective "Partition Inject" menu.
Just mentioning it because I totally didn't find it at first xD

 

Well as long as it autoboots to your 10.7 sysnand and boots to 9.2 emunand when you hold L on boot, everything's fine.
For setting up the booting to decrypt9, there are multiple ways to do this.
Personally I used a bootmanager called bootctr9, where you can simply configure the path and button for every .bin file you want to be able to boot
and it works perfectly.
You can also use the chainloading feature of AuReiNand, where you don't have a config file but you're able to simply put all the bin files into a folder
and give them the wanted buttons as filenames (a.bin, b.bin, start.bin etc). This might be a bit easier to setup but the former method has definitely a lot
more freedom in how things work (because you can configure a ton of things)

 

I simply switched the theme on emuNand and changed the number of icon rows to tell them apart easily. But aside from that, getting into system settings and see the version number there should be sufficient. If it really doesn't change, there are some things that might have gone wrong:

• Are you holding the button before pressing the power button? A9LH is pretty fast, so you might wanna try that first.
  
• Are you sure you didn't accidently reflash the emuNand twice, so that both are now on 10.7? If that's the case, well you should still have the CTRNAND dump of your old 9.2 nand, so simply reflash that again.
• I'm not sure if that changes anything but do you have both firmware.bin and firmware90.bin in your aurei folder? Aside from fixing that you can also try to hold R instead of L, maybe that works.

 

Depends. Once you first make it, yes, it should, but once you format your SysNAND (which you should to unlink it) or make any change to EmuNAND it will be different.