Hacking O3ds xl black screen/Brick after update

[XDM]

ok so i tried to update sysnand and it dod not go well.
i downloaded update ver 9.0 in the form of a bunch of cia files from 3dnus and launched rxtools into sysnand mode and installed all the cia at once using L+R+A in bigbluemenu (titlemanager) and some of the apps says title already installed and after it finished the installation i rebooted and was greeted with a black screen and power lightbut thats all it does. recovery mode doent work (never did work) cant do anything with it. i did make a nand backup before but i dont have any tools to restore it with...

 

[VerseHell]

2 mistakes you did :
- You used the rxmode instead of the devmode
- You used a cia manager instead of sysupdater.
This has been repeated many times, you should have searched first...
Now your only option is an hardware mod.

 

[DjoeN]

You should also have downloaded the cia files from that iso site cause 3DNUS is missing some files for older sysnand versions.
AND you should have searched/asked first before doing so, like @VerseHell said:
- DEVMODE in rxTools
- Then install FBI cia manager to install "sysupdater"
- Then use sysupdater to update your 3DS
(You first needed to download the 9.2 system cia files from that iso sitre and put them on your 3DS SD)