# Data connection failed on Legato 15.10

**URL:** <https://forum.legato.io/t/data-connection-failed-on-legato-15-10/177>\
**Category:** Legato Application Framework\
**Created:** [December 17, 2015, 9:55pm UTC](https://forum.legato.io/t/data-connection-failed-on-legato-15-10/177 "2015-12-17T21:55:47Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mmao](https://avatars.discourse-cdn.com/v4/letter/m/f08c70/32.png) [@mmao](https://forum.legato.io/u/mmao)\
**Post date:** [December 17, 2015, 9:55pm UTC](https://forum.legato.io/t/data-connection-failed-on-legato-15-10/177/1 "2015-12-17T21:55:47Z")

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Device: AR7554  
IMEI: 3527680500xxxxx  
FSN: LM5282003xxxxxx  
Firmware: SWI9X15A\_07.03.05.00 r29574 CNSHZ-AR-BUILD 2015/08/26 12:38:20  
Bootloader: SWI9X15A\_07.03.05.00 r29574 CNSHZ-AR-BUILD 2015/08/26 12:38:20

APN setting is correct and execute  
#cm data connect

The error message in logread:  
Dec 17 21:55:17 swi-mdm9x15 user.err Legato: =ERR= | modemDaemon[32655]/le\_pa\_ecall T=main | swiQmi.c swiQmi\_CheckResponseCode() 690 | Sending QMI\_WDS\_START\_NETWORK\_INTERFACE\_REQ\_V01 failed: rc=0 (), resp.result=1, resp.error=0x000E

Can anyone help me?

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**Author:** ![JayM2M](https://avatars.discourse-cdn.com/v4/letter/j/3d9bf3/32.png) [@JayM2M](https://forum.legato.io/u/JayM2M)\
**Post date:** [December 18, 2015, 2:10pm UTC](https://forum.legato.io/t/data-connection-failed-on-legato-15-10/177/2 "2015-12-18T14:10:43Z")

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What is the answer of the following commands?

`cm radio
cm data`  
The default PDP type used for the data connection is “IPV4V6” which is not supported by some network operators.  
Try to modify it with this command:

```auto
cm data pdp IPV4
```

Then retry to connect with

```auto
cm data connect
```

Jay

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**Author:** ![mmao](https://avatars.discourse-cdn.com/v4/letter/m/f08c70/32.png) [@mmao](https://forum.legato.io/u/mmao)\
**Post date:** [January 19, 2016, 3:55pm UTC](https://forum.legato.io/t/data-connection-failed-on-legato-15-10/177/3 "2016-01-19T15:55:15Z")

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The problem is gone after I updated legato framework by executing the command:  
$ instlegato build/ar7 192.168.1.2