ACNS 4.2.1 Upgrade

[spencercarlos]

I have an ACNS with two hard disks of 36GB, software version ce590-4.2.1. Is there a way to update its version to both 5.X and to a 4.2.X especially the latter?

I already browsed on the software updates page, but can not find a way to update an ACNS starting from the 4.2.1 version.

In fact in the link below reads that "Any ACNS 4.2.x release (except ACNS 4.2.1) to any ACNS 5.x.x release (except ACNS 5.4.x" can be updated

http://www.cisco.com/en/US/partner/products/sw/conntsw/ps491/products_upgrade_guides_chapter09186a00803edf35.html#wp1041284

Thanks in advance for your help!

[ivillegas]

The following ACNS software release upgrades can be performed:

Any ACNS 5.1.x, ACNS 5.2.x, ACNS 5.3.x release to any ACNS 5.4.x release.

Any ACNS 4.2.x release (except ACNS 4.2.1) to any ACNS 5.x.x release (except ACNS 5.4.x).

Any ACNS 5.x.x release to any ACNS 5.x.x release, with the following exception:

Direct upgrade from ACNS 5.0.x to ACNS 5.4.x is not allowed.

From ACNS 5.0.x software, first upgrade to ACNS 5.1.x, ACNS 5.2.x, or ACNS 5.3.x before you upgrade to ACNS 5.4.x.