Hitachi Energy
FOX61x Upgrade
This Application Note describes the procedures for
upgrading the FOX615, FOX612, FOX611 and/or FOX610 network elements
from system release R17A to system release R18,
from system release R16B to system release R18,
using the FOXMAN-UN network management system, see section Upgrade via FOXMAN-UN (ESW Distribution Wizard) or section Upgrade via FOXMAN-UN.
upgrading the FOX615, FOX612, FOX611 and/or FOX610 network elements
from system release R17A to system release R18,
from system release R16B to system release R18,
using the standalone version of the FOXCST element manager, see section Upgrade via FOXCST or section Upgrade via FOXCST.
The FOX61x system release determines the type and ESW version of the core unit(s) and the related set of service units that can be operated with the core unit(s). The version details of the ESW for each system release can be found in the respective system release notes, and in section Version Information.
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Please note: 
If weak or empty passwords have been used for accessing NEs (because that was possible in previous releases), this shall be changed with the present release. For a guidance on appropriate password policies read and follow the sections “Password Rules for Local Authentication” and “Strong Password Policy” in [1KHW028522] User Manual “Management Communication” (FOX61x R18).