Nortel Meridian 1 Option 11C Upgrade Manual page 221

— Is the daughterboard blank? If so, you can load the Release 23
software following the instructions found in the starting up and
testing the system chapter of Option 11C Planning and Installation
Guide (553-3021-210) .
— Does the daughterboard have an earlier release of software? If
so, load Release 23.30 as described in "Upgrade Option 11C/11C
Mini software to a new release" on page 165.
—————————— End of Procedure ——————————
Option 11C and 11C Mini
Use the flash boot ROM utility Page 221 of 224
Upgrade Procedures Guide