Please download the required IP phone firmware from the phone’s CCO page.

http://www.cisco.com/c/en/us/products/collaboration-endpoints/ip-phones/index.html
For ATA 190 Firmware visit https://software.cisco.com/download/release.html?mdfid=286248743&softwareid=282074215&os=&release=1.2.1&relind=AVAILABLE&rellifecycle=&reltype=latest&i=!pp