https://www.cisco.com/c/en/us/td/docs/routers/access/800/firmware/release/notes/VDSL2/fwrna39t.html
Release Notes for NIM Firmware Releases A2pv6F039t and A2pvbF039t - Cisco
These release notes describe new enhancements and fixed caveats for the Cisco NIM-VAB-M,NIM-VAB-A, NIM-VA-B modules using firmware release A2pv6F039t and...
release notesfirmware releasesnimcisco