Firmware Upgrade Process; Updating Cpu Card Firmware - Siemens ST950 Plus+ User Manual

Appendix
Most of the firmware within the ST950 controller is stored in non-removal devices. This
firmware can be updated using the mechanisms described in this section;
• CPU card
o EFC firmware
o Primary firmware
o SEC firmware
o Fail Flash firmware
• Non-Plus+ GSPI peripheral card (e.g. Serial I/O Cards)
o GSPI peripheral firmware
• CIC
• Remote Nodes
B.1

Updating CPU Card Firmware

There are four devices on the CPU card which can be updated using this process:
• EFC
• Primary
• SEC
• Fail Flash (But not used on the Plus
An update may change the firmware in either the EFC alone or in all four devices. During an
upgrade the controller detects which devices are affected and performs varies the procedure
accordingly.
B.1.1 Delivery of Updates
An update is contained in a single file and may be delivered either directly to the user or
through OSS. Where the file is delivered directly to the user it may be transported by any means
appropriate for a file of several megabytes in size e.g. file transfer, memory stick.
B.1.2 Compatibility of Updates
Any important information regarding an update is displayed to the user before the upgrade
proceeds, giving the user the option to cancel the upgrade. Such important information may
indicate a change in functionality and / or interfaces or may indicate a change would be made
to the system. Account can then be taken of the change and the update applied later.
It may not be possible to update from the version for firmware running to the version desired.
This is only likely if the upgrade skips many intermediate firmware versions. In such cases it
will be necessary to perform the upgrade in two or more steps, first going to intermediate
version before going to the final desired version.
ST950 Plus+ User Manual

Firmware Upgrade Process

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