Hitachi Energy
Upgrade via FOXCST
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Non-observance could result in equipment damage. 
Upgrading Embedded Software of FOX61x network elements from ESW released prior to R14A to ESW released with R18 may result in non-operational units.
FOX61x network elements running on ESW from any system release other than R14A must first be upgraded to the system release R14A before further upgrading. Please refer to the corresponding upgrade Engineering Bulletin or Application Note.
Use FOXCST R18 for connecting to the network elements and for downloading and installing the new ESW.
The following preferred upgrade method is described in this Application Note:
Upgrade using the FOXCST GUI with the “Tools > Software Download …” function, for which a detailed description is provided.
For the upgrade using the FOXMAN-UN GUI with the “ESW Task” function refer to section Upgrade via FOXMAN-UN.
There are other possible ways to upgrade a FOX61x, like an upgrade using the FOXCST GUI with manual upgrade of each unit; however these methods are not recommended and are not covered in the present Application Note.
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Please note: 
You may only perform the upgrade to system release R18 if all prerequisites given below are fulfilled.
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Risk of operating trouble! 
The use of weak or empty passwords for accessing FOX61x nodes bears a high risk of unauthorized access, service unavailability, and equipment damage.
We strongly recommend to set strong passwords for all user classes once FOXCST R18 is installed and set up.
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Risk of operating trouble! 
Any deviation from the steps described herein for the upgrade procedure conceal a risk of operating trouble after the upgrade procedure.
Make sure you follow these steps to minimize the risk of system unavailability or malfunction.
Prerequisites:
Your FOX61x equipment needs to fulfill the following prerequisites before the upgrade procedure can be started.
These prerequisites are described in more detail below.