# Changes from Q2687RD R7.43 to R7.51 FW version

**URL:** https://forum.sierrawireless.com/t/changes-from-q2687rd-r7-43-to-r7-51-fw-version/9232
**Category:** Forum and Source related topics
**Created:** [June 2, 2017, 9:20am UTC](https://forum.sierrawireless.com/t/changes-from-q2687rd-r7-43-to-r7-51-fw-version/9232 "2017-06-02T09:20:36Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![rochelle](https://avatars.discourse-cdn.com/v4/letter/r/8e7dd6/32.png) [@rochelle](https://forum.sierrawireless.com/u/rochelle)
#### Post date: [June 2, 2017, 9:20am UTC](https://forum.sierrawireless.com/t/changes-from-q2687rd-r7-43-to-r7-51-fw-version/9232/1 "2017-06-02T09:20:36Z")

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Hi,

I’d like to ask what changes have been made in the firmware from R7.43 version to R7.51.  
The device under test was working fine in R7.43, but after upgrading to R7.51, there have been issues like it takes time to connect to modem or can’t connect at all.

Thank you.  
Regards,  
/R

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### Author: ![mlw](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/mlw/32/3706_2.png) [@mlw](https://forum.sierrawireless.com/u/mlw)
#### Post date: [June 5, 2017, 6:46am UTC](https://forum.sierrawireless.com/t/changes-from-q2687rd-r7-43-to-r7-51-fw-version/9232/2 "2017-06-05T06:46:35Z")

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Hi,

R7.4x to R7.5x was a generational change and there are not release notes between these, you can get them R7.43 to R7.47 which was the last in its generation but the final leap there is no external information for.

Regards

Matt