Before I will restore the Nand Backup, I would like to to doublecheck with you. I only updated my EmuNand to 11.0.1. Did this also burned the fuses? My normal OFW is still on 9.10 and didn't update this for a couple of months.You need to use Genuine Boot to reboot in to OFW because the Boot Original FW function is broken after updating to 11.0.1 OFW.
You also need to make sure that emuNAND is on 11.0 firmware or lower or SX OS CFW won't boot.
If you have a NAND backup on 11.0 firmware or lower, then you can use this as your emuNAND.
The Nand restore will be done with SX OS Main Menu?