Yeah I did that.
I want to start over from the beginning 100%. I will format my sd card to fat32
Is there a specific guide you recommend ?
Reformatting would mean either backing up and restoring emuNAND or making a fresh new emuNAND again.
Are you 100% sure you injected fbi into emuNAND and not sysNAND?
I followed the same guide you did and everything went perfectly. Although I wasn't able to inject FBI into sysNAND, I managed injecting it successfully .
Try the rebuild database thing once again on both sysNAND and emuNAND again because I feel I had the same error as you did