What is shelf modules update order? Last updated Save as PDF Share Share Tweet Share Views:106Visibility:PublicVotes:0Category:fas-systemsSpecialty:hwLast Updated: Applies to All shelf I/O modules (IOM6/IOM12/NSM100) Answer Individual IOM and ACP firmware is updated on eligible shelves automatically using a low-priority background firmware update process Additional Information Instructions for Downloading and Installing Shelf & ACP Firmware