hi, b2b, I filed 485 through my lawyer. I think VSC changed the procedure for FP.
It used to be only lawyer will get the FP and FP message will not be heard on AVM. now it becomes applicant gets the FP and AVM updates FP message too. my case , I checked AVM using my 485 EAC# , I heard the same thing as other people do , it says" On October 4, 2001, we mailed a notice requesting you appear for finger print recording.... blah , blah...."
So I think you can check AVM on your 485 , if it becomes something similar to the above, you will get FP within days. otherwise, if it still says " your 485 was received on XXXX date , takes 360 and 540 days..... " then you should contact IIO inquiring your FP.