yep, i have a backup of my sysnand. I was thinking that restore nand, my firmware would leave the 4.5 to 9.2 version ... without use sysupdater.When you say that you've restored the NAND, you actually have a dump/copy of your sysNAND before doing updates?
Because AFAIK (and I may be wrong about it) after you do some updates on your emuNAND it won't be compatible to flash back to sysNAND.
Because without a backup of your sysNAND (whatever the version) doing a hardmod now may not help you to restore your 3DS.
I think that you should talk with @mvmiranda through PM in portuguese to sort it out.
I'm talking to him. Thank you for your help!