# Shy Q2686RD modules

**URL:** <https://forum.sierrawireless.com/t/shy-q2686rd-modules/7905>\
**Category:** Legacy AirPrime modules\
**Created:** [April 27, 2015, 4:33am UTC](https://forum.sierrawireless.com/t/shy-q2686rd-modules/7905 "2015-04-27T04:33:44Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![davidc](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@davidc](https://forum.sierrawireless.com/u/davidc)\
**Post date:** [April 27, 2015, 4:33am UTC](https://forum.sierrawireless.com/t/shy-q2686rd-modules/7905/1 "2015-04-27T04:33:44Z")

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Hiya,

I’ve got three Q2686RD modules here that I cannot communicate with. Lights are on, but nobody is home.

I’ve put each one in the Development Board and connected to them using a hard RS232 connection from the docking station on my laptop.

None of the modules will respond to AT commands (or even just ‘AT’ - which I would expect to get even if the module is stuck in download mode).

I’ve used DWLWin (V 4.2.1.6) to attempt to reflash the modules - with each module DWLWin will download the boot-loader (takes about 9 seconds), then times out at about 19 seconds with the message “Fatal timeout error: the target is no longer responding”.

It’s been a while since I used DWLWin, but have never had these issues before.

Any thoughts or pointers to get these modules going again would be appreciated.

Ciao, Dave

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**Author:** ![Rex\_alex](https://avatars.discourse-cdn.com/v4/letter/r/73ab20/32.png) [@Rex\_alex](https://forum.sierrawireless.com/u/Rex_alex)\
**Post date:** [April 29, 2015, 5:52am UTC](https://forum.sierrawireless.com/t/shy-q2686rd-modules/7905/2 "2015-04-29T05:52:21Z")

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is it working on USB?

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**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [April 29, 2015, 8:39am UTC](https://forum.sierrawireless.com/t/shy-q2686rd-modules/7905/3 "2015-04-29T08:39:44Z")

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> [@davidc](#):
>
> I’ve got three Q2686RD modules here that I cannot communicate with.

Are they brand new? Have they ever worked?

I gather you have others that do work?

> [@](#):
>
> with each module DWLWin will download the boot-loader (takes about 9 seconds), then times out at about 19 seconds with the message “Fatal timeout error: the target is no longer responding”

ISTR something like that with a WMP100 board: it was the first prototype run and, IIRC, turned out to be a fault with the external memory.

Hence the question of whether these have ever worked…

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**Author:** ![davidc](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@davidc](https://forum.sierrawireless.com/u/davidc)\
**Post date:** [April 30, 2015, 1:31am UTC](https://forum.sierrawireless.com/t/shy-q2686rd-modules/7905/4 "2015-04-30T01:31:30Z")

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Hiya,

> [@Rex\_alex](#):
>
> is it working on USB?

No, the devices do not enumerate.

> [@awneil](#):
>
> Are they brand new? Have they ever worked?

They’re not new (had them for 12 months or so), and yes I have had them working in the past (in the same dev board).

> [@awneil](#):
>
> I gather you have others that do work?

Haven’t got any more Q2686RD - but the Q2686 and Q2698 modules do work in the same dev board.

> [@awneil](#):
>
> ISTR something like that with a WMP100 board: it was the first prototype run and, IIRC, turned out to be a fault with the external memory.

Interesting…

They’re dead technology here in Oz now - the Telstra 900MHz GSM system is being taken off-line in December. But … they’re still useful for testing code against when having issues with the Q2698 (of which I could write a small book about).

ciao, Dave