Hi Peter,

I believe you need to be at 5.1(3) before this upgrade can be performed. Here is the related info;

Supported Cisco Unified Communications Manager Upgrades for Release 7.x

Cisco Unified Communications Manager 7.0(2)

Release Date 2/3/2009

Direct upgrade:

7.0(1), 6.1(2), 6.1(1b), 6.1(1a), 6.1(1), 6.0(1b), 6.0(1a), 6.0.(1), 5.1(3e), 5.1(3d), 5.1(3c), 5.1(3b), 5.1(3a), 5.1(3)

Direct upgrade using DMA:

4.3(2), 4.3(1), 4.2(3), 4.1(3)

Cisco Unified Communications Manager 7.0(1)

Release Date 8/28/2008

Direct upgrade:

6.1(2), 6.1(1b), 6.1(1a), 6.1(1), 6.0(1b), 6.0(1a), 6.0.(1), 5.1(3d), 5.1(3c), 5.1(3b), 5.1(3a), 5.1(3)

Direct upgrade using DMA:

4.3(2), 4.3(1), 4.2(3), 4.1(3)

Cisco Unified Communications Manager Software Compatibility Matrix

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/compat/ccmcompmatr.html#wp40074

Release Notes for Cisco Unified Communications Manager Release 7.0(1)

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/rel_notes/7_0_1/cucm-rel_notes-701.html#wp579989

Ordering the Upgrade Media

To upgrade to Cisco Unified CM Release 7.0(1), use the Product Upgrade Tool (PUT) to obtain a media kit and license or to purchase the upgrade from Cisco Sales.

To use the PUT, you must enter your Cisco contract number (Smartnet, SASU or ESW) and request the DVD/DVD set.

https://tools.cisco.com/gct/Upgrade/authc/forms/CDClogin.fcc?TYPE=33619969&REALMOID=06-00044a4a-55a1-13f0-b6bb-83846dc90000&GUID=0&SMAUTHREASON=0&METHOD=GET&SMAGENTNAME=$SM$GDuJAbSsi7kExzQDRfPKUItt%2bPcjKOjTGlbtk%2fRp7BdNYLiP9lyOBjXBU5PAxIXD&TARGET=http%3A%2F%2Ftools.cisco.com%2Fgct%2FUpgrade%2Fjsp%2Findex.jsp

Cisco Unified Communications Operating System Administration Guide Release 7.0(1)

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/cucos/7_0_1/cucos/iptpch7.html#wp1108572

Hope this helps!

Rob