# System Update not Trying New Versions

**URL:** <https://forum.legato.io/t/system-update-not-trying-new-versions/5935>\
**Category:** Legato Application Framework\
**Created:** [August 17, 2021, 5:35pm UTC](https://forum.legato.io/t/system-update-not-trying-new-versions/5935 "2021-08-17T17:35:28Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![simon.naegele](https://avatars.discourse-cdn.com/v4/letter/s/848f3c/32.png) [@simon.naegele](https://forum.legato.io/u/simon.naegele)\
**Post date:** [August 17, 2021, 5:35pm UTC](https://forum.legato.io/t/system-update-not-trying-new-versions/5935/1 "2021-08-17T17:35:28Z")

</div>

Hi,

on one of our modules we have a strange behavior. After updating via `update *.wp76xx.update` the new system isn’t tried:

```auto
root@swi-mdm9x28-wp:~# legato status
Systems installed:
  2 [untried]
  1 [good] <-- current
Legato framework is running.

```

What prevents the new system to be tried?

Thanks,  
Simon

---

<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:** [August 17, 2021, 8:17pm UTC](https://forum.legato.io/t/system-update-not-trying-new-versions/5935/2 "2021-08-17T20:17:14Z")

</div>

You need to check the logread when you update this file.

BTW, I don’t see such issue in mangoh layer, you can diff the .sdef file with yours

> **[GitHub - mangOH/mangOH: Primary mangOH git repository](https://github.com/mangOH/mangOH)**
>
> Primary mangOH git repository. Contribute to mangOH/mangOH development by creating an account on GitHub.

---

<div class="post-metadata">

**Author:** ![simon.naegele](https://avatars.discourse-cdn.com/v4/letter/s/848f3c/32.png) [@simon.naegele](https://forum.legato.io/u/simon.naegele)\
**Post date:** [August 18, 2021, 8:49am UTC](https://forum.legato.io/t/system-update-not-trying-new-versions/5935/3 "2021-08-18T08:49:53Z")

</div>

We are using the default.sdef from legato which is installed via leaf:

```auto
#include $LEGATO_ROOT/default.sdef

apps:
{
	apps/manager/manager.adef
	apps/testcli/testcli.adef
	apps/modem/modem.adef
}

```

So I tried it again, but the system doesn’t change. Please see the attached log: [update-log](https://forum.legato.io/uploads/short-url/qL4RPIGXYE3jKrB9VRXOYDaRNud) (380.4 KB)

When I check the errors I can see this line:

```auto
Aug 18 10:24:25 swi-mdm9x28-wp user.err Legato: =ERR= | startSystem[1090]/framework T=main | start.c GetStatus() 1208 | Failed to read status of system '2' (No such file or directory).

```

But the folder is there:

```auto
root@swi-mdm9x28-wp:~# legato status
Systems installed:
  2 [untried]
  1 [good] <-- current
root@swi-mdm9x28-wp:~# ls /legato/systems/
2/ current/

```

It would be really bad if this happens in production. As I said, this only happens on one of our boards. The other ones are working fine.

The one that makes the problems has this legato version:

```auto
root@swi-mdm9x28-wp:~# legato version
19.11.2_c2834c4125bdd101a8c4a4119459855f

```

---

<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:** [August 18, 2021, 8:52am UTC](https://forum.legato.io/t/system-update-not-trying-new-versions/5935/4 "2021-08-18T08:52:39Z")

</div>

does problem still happen if you re-flash the legato image on this module?

---

<div class="post-metadata">

**Author:** ![simon.naegele](https://avatars.discourse-cdn.com/v4/letter/s/848f3c/32.png) [@simon.naegele](https://forum.legato.io/u/simon.naegele)\
**Post date:** [August 18, 2021, 8:54am UTC](https://forum.legato.io/t/system-update-not-trying-new-versions/5935/5 "2021-08-18T08:54:59Z")

</div>

I haven’t tried that yet. I’d like to know what’s going wrong here to eliminate or react to the problem when doing software updates in production

---

<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:** [August 18, 2021, 9:52am UTC](https://forum.legato.io/t/system-update-not-trying-new-versions/5935/6 "2021-08-18T09:52:53Z")

</div>

cannot find related message to explain this…

BTW, for production, I would suggest you building the application together to the legato image.  
You can see here:

> [@Application no longer available after a certain time](https://forum.legato.io/t/application-no-longer-available-after-a-certain-time/4546/4):
>
> You need to type this after you download the app. BTW, you can check if the system “mark-good” by the following: root@swi-mdm9x28-wp:~# legato status Systems installed: 6 [good] ← current Legato framework is running.

---

<div class="post-metadata">

**Author:** ![simon.naegele](https://avatars.discourse-cdn.com/v4/letter/s/848f3c/32.png) [@simon.naegele](https://forum.legato.io/u/simon.naegele)\
**Post date:** [August 18, 2021, 9:55am UTC](https://forum.legato.io/t/system-update-not-trying-new-versions/5935/7 "2021-08-18T09:55:44Z")

</div>

Ok, I’ll keep that in mind for production. Thanks for the information!