"Slot has been permanently blocked"

I flashed a custom rom and the on first sceen my device asked to insert the PIN code, then i tried more than two times and it showed "Slot has been permanently blocked". I couldt make any fonecalls And when i flashed my stock rom it works normal.
Do you know how to unlock the sim slot?

Thank you very much.

Device: Blu vivo IV (Gionne s.5.5) chipset 6598
Custom rom: Lolifox V6