# mangOH yellow wifi not working

**URL:** <https://mangoh.discourse.group/t/mangoh-yellow-wifi-not-working/3059>\
**Category:** mangOH Yellow\
**Created:** [November 13, 2019, 2:54pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-wifi-not-working/3059 "2019-11-13T14:54:13Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![tomalex](https://avatars.discourse-cdn.com/v4/letter/t/71e660/32.png) [@tomalex](https://mangoh.discourse.group/u/tomalex)\
**Post date:** [November 13, 2019, 7:53pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-wifi-not-working/3059/2 "2019-11-13T19:53:16Z")

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Hi Elmo,

What exactly did you do before your have started the wifi service and client? Did you do some system changes? Like installing a new Mangoh Build? Or using the swiflash command?

We also had some problems with Yellow Wifi last week after installing the Mangoh Build without Octave. Here is the ticket:

> [@Mangoh Yellow Wifi app only iPV6](https://mangoh.discourse.group/t/mangoh-yellow-wifi-app-only-ipv6/2996/14):
>
> There were no external devices connected, and I used a high power USB. I have just talked with my colleague an he ended up with the same issue after installing a Mangoh Build without Octave. I think it has something to do with mixing up something on the filesystem. Swiflash -r does not work (only with WP77 release 11 but no difference) I will send you the new logs in PM. Thanks a lot, tom

Due to time constrainst we ended up implementing the POC with FX30 and IOT wifi card but would be good to clear this issue.

Please share us the log messages (logread cmd) when you start the wifi client. If you have the same problem you should see an error message like “‘/legato/systems/current/modules/brcmfmac.ko’: File exists”” .

Best,  
tom

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