# Updating the JULES source code of a suite u-knr47 from vn7.0 to vn7.6

**URL:** <https://cms-helpdesk.ncas.ac.uk/t/updating-the-jules-source-code-of-a-suite-u-knr47-from-vn7-0-to-vn7-6/1950>\
**Category:** JULES\
**Tags:** JASMIN\
**Created:** [5 January 2026 15:25 UTC](https://cms-helpdesk.ncas.ac.uk/t/updating-the-jules-source-code-of-a-suite-u-knr47-from-vn7-0-to-vn7-6/1950 "2026-01-05T15:25:56Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![n.kangari](https://avatars.discourse-cdn.com/v4/letter/n/9f8e36/32.png) [@n.kangari](https://cms-helpdesk.ncas.ac.uk/u/n.kangari)\
**Post date:** [5 January 2026 15:25 UTC](https://cms-helpdesk.ncas.ac.uk/t/updating-the-jules-source-code-of-a-suite-u-knr47-from-vn7-0-to-vn7-6/1950/1 "2026-01-05T15:25:56Z")

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Hi,

I am trying to update the source code of a suite u-knr47 which currently uses the jules vn7.0 to vn7.6. The jules vn7.0 has additional code over the official release to implement the p-model. As a latest version of the jules is available, we want to port the code in the new vn7.6. Is there a way to do this?

Currently I’m trying to use the steps mentioned in [https://code.metoffice.gov.uk/trac/jules/wiki/JULESWithRose](https://code.metoffice.gov.uk/trac/jules/wiki/JULESWithRose).

This is what I receive when I run the app-upgrade command:

““(base) [naren047@cylc2 ~]$ rose app-upgrade -M jules\_src/vn7.0copy1\_c4/rose-meta -C ~/roses/u-knr47/app/jules/ --all-versions

= vn7.0““

Does this mean there is no upgrade possible for this suite or version??

Please help in updating the source code.

Thanks and kind regards

Narender

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**Author:** ![dcase](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/dcase/32/468_2.png) [@dcase](https://cms-helpdesk.ncas.ac.uk/u/dcase)\
**Post date:** [5 January 2026 17:11 UTC](https://cms-helpdesk.ncas.ac.uk/t/updating-the-jules-source-code-of-a-suite-u-knr47-from-vn7-0-to-vn7-6/1950/2 "2026-01-05T17:11:32Z")

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I think that you are using a local source for your suite, so there is nothing stopping you checking out a more recent version and modifying it if you wish.

The app upgrades would be useful up to a point, if the JULES team keeps them up to date (and I don’t know if they do or don’t), but you can update namelists and find appropriate data by hand as an alternative. It can be a bit of an effort but if you compare the rose stem examples for the versions of interest that may also help.

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**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/cms_support/original/1X/1fd2411499ffcbc299fe756cd5cdf26e44956558.png) [@system](https://cms-helpdesk.ncas.ac.uk/u/system)\
**Post date:** [4 February 2026 17:12 UTC](https://cms-helpdesk.ncas.ac.uk/t/updating-the-jules-source-code-of-a-suite-u-knr47-from-vn7-0-to-vn7-6/1950/3 "2026-02-04T17:12:25Z")

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