First of all, congratulations to all I-485 approval.
I did my FP (code 3 but no photo or signature was taken) on March 10 but have not seen any LUD on I-485. Following the suggestions on the board, I called FBI today and was told they have not received FP results. I called USCIS and was told to wait. I questioned about code 3 and CR said it is only FP and code 2 is biometrics which I believe it was not accurate.
So I went to ASC again today again with a copy of FP notice and told them I had code 3 but no photo or signature was taken on March 10. Apparently, they knew what code 3 meant and got everything (FP again, right index finger, photo and signature).
The person who took my FP last time was there at the reception and I asked her why no photo or signature was taken last time. She told me to do everything again and don't say anything when I go inside.
I think the reason of no LUD is because biometrics were not complete. If you have code 3, make sure everything is taken. Now let's see if I will see any LUD on my I-485.
Thanks for the help.