OK!!! So i decide to give it a try...
So here is my step by step. (Dont follow this, its just what i did)
New Nintendo 3DS XL (RED) Original OFW 11.0
1. Systransfer from old3ds, Fieldrunner, dump and, restore nand. etc. DSiWareHAX, formated system etc.
2. Boot HomeBrew Launcher with OOTHAX, Pre-Setup Menuhax to 9.2.0-20U
3. Donwgrade from 11.0 to 9.2 direcly.
4. First Run, error. Restarted and boot direcly to homebrew launcher, i alredy left it setup for 9.2 remember
5. Second run downgrade complete and fast ( like always happens wiith new3ds).
6. Restarted and boot directly to HBL because of menuhax
7. Run UnsafeA9LHInstaller, press Select. Done!!
8. Copied "arm9loaderhax.bin" to microSD. Boot and setup FBI installer inject.
Error : Black screen. Wont boot sysnand.
Deleted "Nintendo 3DS" folder, because was conflicted with menuhax. Done!!!
Forget this :
9. Installed sysupdater and installed 11.1.0-34U offline files!!!
So, Luma3DS, ARM9LoaderHAX, sysNAND updated.
Never was so easy!!!!!