# Q2686H latest Firmware

**URL:** <https://forum.sierrawireless.com/t/q2686h-latest-firmware/7054>\
**Category:** Legacy AirPrime modules\
**Created:** [February 24, 2014, 2:25am UTC](https://forum.sierrawireless.com/t/q2686h-latest-firmware/7054 "2014-02-24T02:25:05Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![kaputnik](https://avatars.discourse-cdn.com/v4/letter/k/91b2a8/32.png) [@kaputnik](https://forum.sierrawireless.com/u/kaputnik)\
**Post date:** [February 24, 2014, 2:25am UTC](https://forum.sierrawireless.com/t/q2686h-latest-firmware/7054/1 "2014-02-24T02:25:05Z")

</div>

Hi,  
I have some trouble with a Q2686H, what is the last firmware revision that will work with this legacy CPU ?  
With v7.52 I get an insufficient RAM error in Dev Studio , v7.51 has the 256k option but is very unstable.

Can someone tell me a known good firmware revision ?

Kind regards

---

<div class="post-metadata">

**Author:** ![lotam](https://avatars.discourse-cdn.com/v4/letter/l/958977/32.png) [@lotam](https://forum.sierrawireless.com/u/lotam)\
**Post date:** [February 24, 2014, 3:24pm UTC](https://forum.sierrawireless.com/t/q2686h-latest-firmware/7054/2 "2014-02-24T15:24:08Z")

</div>

The latest FW is R7.47.6, release note: [https://forum.sierrawireless.com/t/open-at-application-framework-2-37-6/6106/1](https://forum.sierrawireless.com/t/open-at-application-framework-2-37-6/6106/1).

Hope it helps.

---

<div class="post-metadata">

**Author:** ![kaputnik](https://avatars.discourse-cdn.com/v4/letter/k/91b2a8/32.png) [@kaputnik](https://forum.sierrawireless.com/u/kaputnik)\
**Post date:** [February 25, 2014, 11:54am UTC](https://forum.sierrawireless.com/t/q2686h-latest-firmware/7054/3 "2014-02-25T11:54:53Z")

</div>

Thanks! I got it working with this version.