# Modify Legato Application Framework

**URL:** https://forum.legato.io/t/modify-legato-application-framework/6692
**Category:** Uncategorized
**Created:** [January 22, 2024, 7:20am UTC](https://forum.legato.io/t/modify-legato-application-framework/6692 "2024-01-22T07:20:02Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![clover](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/clover/32/2283_2.png) [@clover](https://forum.legato.io/u/clover)
#### Post date: [January 22, 2024, 7:20am UTC](https://forum.legato.io/t/modify-legato-application-framework/6692/1 "2024-01-22T07:20:02Z")

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Hi，I want to make some changes to the source code of Legato. How can I replace the original framework on the target device with my updated Legato framework

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### Author: ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)
#### Post date: [January 22, 2024, 7:24am UTC](https://forum.legato.io/t/modify-legato-application-framework/6692/2 "2024-01-22T07:24:35Z")

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After “make wp76xx”, you need to download the newly generated legato.cwe to module.

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<div class="post-metadata">

### Author: ![clover](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/clover/32/2283_2.png) [@clover](https://forum.legato.io/u/clover)
#### Post date: [January 22, 2024, 7:33am UTC](https://forum.legato.io/t/modify-legato-application-framework/6692/3 "2024-01-22T07:33:28Z")

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Where can I find legato.cwe and how can I download it into the module.

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### Author: ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)
#### Post date: [January 22, 2024, 7:51am UTC](https://forum.legato.io/t/modify-legato-application-framework/6692/4 "2024-01-22T07:51:08Z")

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after “make wp76xx”, the new legato.cwe should be appeared in a path like  
/home/owner/leaf/leaf-data/wp76/wp76-legato/build/wp76xx/

You can transfer the file module’s /tmp folder by scp, and then in the module’s console, you can type “fwupdate download /tmp/legato.cwe” to upgrade.

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<div class="post-metadata">

### Author: ![clover](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/clover/32/2283_2.png) [@clover](https://forum.legato.io/u/clover)
#### Post date: [January 22, 2024, 8:21am UTC](https://forum.legato.io/t/modify-legato-application-framework/6692/5 "2024-01-22T08:21:44Z")

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Thanks!  
Why did I add a `LE-INFO()` in the application framework, but I didn’t have the information I added when executing `logread - f | grep <app>`

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<div class="post-metadata">

### Author: ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)
#### Post date: [January 22, 2024, 8:23am UTC](https://forum.legato.io/t/modify-legato-application-framework/6692/6 "2024-01-22T08:23:06Z")

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have you tried the simple helloworld application and monitor the “logread -f”?

> <https://github.com/legatoproject/legato-af/tree/master/apps/sample/helloWorld>
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> //github.com/legatoproject/legato-af/tree/master/apps/sample/helloWorld