This is a issue with menuhax instalationI'm experiencing the same problem as @jrk190
EDIT: After taking out the SD Card and booting back up its in 9.2 sysnand, sign of relief
(payload for your old fw)Yes, works up to 10.3, meaning 9.3-10.3 will do
I think that ir works way better in o3ds, ahven't seen any bricks on o3ds except for retard people who use wrong files, all the bricks i've seen are on N3ds
You need to have an entry point (a way to launch the homebrew launcher). Download safesysupdater (which you can find on the first post, it's an attachment, the path on your SD should be "E(?):/3ds/safesysupdater/safesysupdater.3dsx) and you also need to download the full update package for 9.2J (i'm assuming your console is japanese) from the ISO website (just google "[MEGA] [CIA/BIN] MSET 4.X & 6.X backups, Browser backups, Update packs (All Regions)"). Extract the package files to a folder called updates in root of SD (then you should have alot of files as E:/updates/xxxxx.cia). Delete the file 000400102002CA00.cia from your updates folder. Launch homebrew and then safesysupdater, check all the files and then proceed to downgrade (it could take alot of tries for it to actually start downgrading, it is safe to shutdown if you have black screen with white llne)
2. Yes, just make sure you download the right update pack for your console model and region
Hrm, had a look at the source code... I see SOME of the stuff but not all of it. @cpasjuste you should definitely include the stuff from Stevice10, if you really want this to be "safe" because, other than checking the MD5s and region of the console, this actually isn't safer than regular sysupdater, and seeing as that's the whole point of this project I'm not sure why you removed it in the first place...
gl
If you're using menuhax, don't panic that after rebooting it will show a black screen, it's because of the payload being for the old system fw, just remove the SD and test if it works 
I have a theory regarding this... the bricks don't apparently affect o3ds first thing, and second thing you should clear the update nag to try to avoid this even further... good luck
omg firmware is 9.2.0-20U what is this magic? Hmm.. what to do now? Oh emunand thingy, I will search guide now.gl
I have a theory regarding this... the bricks don't apparently affect o3ds first thing, and second thing you should clear the update nag to try to avoid this even further... good luck
XDD enjoy
If by emunand you mean CFW (and not flashcard like gateway), you'll most likely use rxtools. It's pretty easy to setup tbh, not sure why that tutoril is so big
I'm too lazy to actually explain everything (misstyped everyone for some reason, see i'm tired), so you'd rather stick with a tutorial (if err by tomorrow you'd still be having issues setting it up i could help u out)
https://gbatemp.net/threads/installing-rxtools-9-2-0-20-w-unlinking-updating-online-access.409489/
