Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.0(4b) (OL-21012-04-B0, January 2011)

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Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.0(4b)
OL-21012-04
Downgrading Your Cisco MDS SAN-OS Software Image
Table 14 Nondisruptive Downgrade Path from NX-OS Release 5.0(4b)
To NX-OS or SAN-OS
Release Nondisruptive Downgrade Path
NX-OS:
5.0(4)
5.0(1a)
4.2(7a)
4.2(5)
4.2(3a)
4.2(3)
4.2(1b)
4.2(1a)
4.1(3a)
4.1(1c)
4.1(1b)
You can nondisruptively downgrade directly from NX-OS Release 5.0(4b).
SAN-OS:
3.3(5)
3.3(4a)
3.3(4)
3.3(3)
3.3(2)
3.3(1c)
3.3(1a)
Downgrade to NX-OS Release 4.2(x) or Release 4.1(x) first, and then
downgrade to SAN-OS Release 3.3(x).
3.2(3a)
3.2(3)
3.2(2c)
3.2(1a)
3.2(1)
3.1(4)
3.1(3a)
3.1(3)
3.1(2b)
3.1(2a)
3.1(2)
3.0(3a)
3.0(3)
3.0(2a)
3.0(2)
3.0(1)
2.1(3)
2.1(2e)
2.1(2d)
2.1(2b)
2.1(2)
2.1(2b)
2.1(1a)
Downgrade to NX-OS Release 4.2(x) or Release 4.1(x) first, then downgrade
to SAN-OS Release 3.3(x), and then downgrade to Release 3.2(x), Release
3.1(x)., Release 3.0(x), or Release 2.1(x).