Nortel Meridian 1 Option 11C Upgrade Manual page 167

Upgrade Option 11C/11C Mini software to a new release
7 Make changes to the ISM parameters, if you need to.
8 Validate keycodes.
9 Load the software.
Please read this important message on upgrades
When you upgrade from Release 22 to 23, 22 to 24, or 23 to 24, you
must use the SYSLOAD upgrade method.
Toggle the power supply to OFF and then to ON. During the reboot,
press Ctrl+I to access the Installation Program.
You cannot use the UPGRADE command to upgrade correctly from
Release 22 to 23, 22 to 24, or 23 to 24.
If you try the UPGRADE method, an invalid keycode message
displays. If you get this message, restart using the SYSLOAD method.
Log in to the system and select LD 143. Type UPGRADE to access
Reason for updating the boot code
The boot code on the existing Option 11C SSC card must be NTDK34AA
Release 09 or later to support the NTDK81 or NTTK13 Flash
Daughterboards.
The minimum release of boot code for the Option 11C Mini MSC card is
NTDK34FA Release 03. NTDK34FA Release 03 also supports the NTDK21,
NTDK81, and NTTK13 Flash Daughterboards on the SSC card.
Note: Nortel Networks recommends that you upgrade the boot code to
the latest release when you upgrade the software. The boot code is on the
programmed PCMCIA card.
CAUTION
SYSLOAD method
UPGRADE method
the Installation Program.
Option 11C and 11C Mini
Page 167 of 224
Upgrade Procedures Guide