# Fundamentals - WP7607 Can't develop and test applications **URL:** \ **Category:** mangOH Green\ **Created:** [July 21, 2020, 12:39pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891 "2020-07-21T12:39:14Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 4, 2020, 3:00pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/21 "2020-08-04T15:00:45Z")
Please check debug messge by " logread -f" ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 4, 2020, 3:02pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/22 "2020-08-04T15:02:54Z")
It’s basically showing me nothing. ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/7/753aeac71c23e8bfe67669a8bca26e60ec937cc5.png) ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 4, 2020, 3:06pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/23 "2020-08-04T15:06:38Z")
-f paramete means only printing out the new log. You need to start the app again ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 4, 2020, 3:14pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/24 "2020-08-04T15:14:16Z")
Okay now this pops up. ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/0/0b0b78fd10a10630590af96eb4adbdf795444cae.png) ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 4, 2020, 3:17pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/25 "2020-08-04T15:17:00Z")
What is the version of the legato version on module ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 4, 2020, 3:25pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/26 "2020-08-04T15:25:24Z")
root@swi-mdm9x28:~# legato version 18.03.0\_b463e04cf08fb8d8f1ea5ee00d7894c0\_modified ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 4, 2020, 3:26pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/27 "2020-08-04T15:26:32Z")
Then it does not match with the app which is 20.04 ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 4, 2020, 3:31pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/28 "2020-08-04T15:31:59Z")
Do you have any reference guides on how to update the WP7607 to Legato 20.04\_ ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 4, 2020, 3:32pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/29 "2020-08-04T15:32:33Z")
You can download it through leaf ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 4, 2020, 3:48pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/30 "2020-08-04T15:48:14Z")
This is what I was asking about in my previous post. When I’m connected to my module I can’t use leaf commands. ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/c/c0ed4b740fda44d68a95cd17819fee4563644a61.png) ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 4, 2020, 4:13pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/31 "2020-08-04T16:13:55Z")
That is why i suggest you to reinstall the ubuntu ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 4, 2020, 4:17pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/32 "2020-08-04T16:17:16Z")
And after a re-installation of Ubuntu I should be able to run leaf commands when connected to the module? Like “leaf search -t wp76xx -t latest” from [https://source.sierrawireless.com/resources/airprime/software/legato\_application\_development\_kit\_linux/](https://source.sierrawireless.com/resources/airprime/software/legato_application_development_kit_linux/) ? ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 4, 2020, 9:37pm UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/33 "2020-08-04T21:37:29Z")
No problem is found on my Ubuntu18.04 on command “leaf setup wp76stable\_1 -p swi-fx30-cat1\_1.0.0”. ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 5, 2020, 8:51am UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/34 "2020-08-05T08:51:58Z")
I just added the package you were talking about. ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/d/dbaacd8d1d37da081ad3a9ff10d666d3fbb0d27c.png) However, I still get the same error. ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/a/acd5621fe83a4ae77c89f801cc5afb8d984b2b9e.png) ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/e/e01621d9c70fd3582b9963b845a9b0d6a7df5137.png) ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 5, 2020, 9:20am UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/35 "2020-08-05T09:20:51Z")
what is the value of “app info helloWorld” in module? ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 5, 2020, 9:28am UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/36 "2020-08-05T09:28:36Z")
root@swi-mdm9x28:~# app info helloWorld helloWorld status: stopped app.name: helloWorld app.md5: 68b5085a3f6ed314e8297187ff99300b app.version: legato.version: 20.04.0 ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 5, 2020, 9:29am UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/37 "2020-08-05T09:29:43Z")
What is the version of the legato version on module ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 5, 2020, 9:31am UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/38 "2020-08-05T09:31:46Z")
root@swi-mdm9x28:~# legato version 18.03.0\_b463e04cf08fb8d8f1ea5ee00d7894c0\_modified ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [August 5, 2020, 9:39am UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/39 "2020-08-05T09:39:11Z")
Then it does not match with the app which is 20.04. I guess you can update the module FW from some path like: /home/owner/LEAF/swi-wp76\_4.6.0/leaf-data/wp76dev/wp76-image ---
**Author:** ![tadera](https://avatars.discourse-cdn.com/v4/letter/t/f14d63/32.png) [@tadera](https://mangoh.discourse.group/u/tadera)\ **Post date:** [August 5, 2020, 9:44am UTC](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891/40 "2020-08-05T09:44:17Z")
Okay but then I still don’t know I can fix this. I ran the command that you suggested: _leaf setup wp76stable\_1 -p swi-fx30-cat1\_1.0.0_. Do I need to update the firmware then? It would be nice to get a concrete piece of advice as I’m new to the mangOH Green. [Previous page](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891.md?page=1) [Next page](https://mangoh.discourse.group/t/fundamentals-wp7607-cant-develop-and-test-applications/4891.md?page=3)