# How do you reset WMOD2A G1900 version

**URL:** <https://forum.sierrawireless.com/t/how-do-you-reset-wmod2a-g1900-version/2131>\
**Category:** Legacy FX/FXT series\
**Created:** [April 29, 2008, 6:57pm UTC](https://forum.sierrawireless.com/t/how-do-you-reset-wmod2a-g1900-version/2131 "2008-04-29T18:57:48Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![bbiandov](https://avatars.discourse-cdn.com/v4/letter/b/898d66/32.png) [@bbiandov](https://forum.sierrawireless.com/u/bbiandov)\
**Post date:** [April 29, 2008, 6:57pm UTC](https://forum.sierrawireless.com/t/how-do-you-reset-wmod2a-g1900-version/2131/1 "2008-04-29T18:57:48Z")

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How do you reset WMOD2A-G1900 to factory defaults? The reset pin on the D15 connector only executes a power-on reset, NOT factory defaults?

Also the RS232 interface provides “real” voltage swing not TTL correct?

Thanks  
B

![](http://img.auctiva.com/imgdata/3/6/4/2/4/6/webimg/123507562_o.jpg)

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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, 2008, 9:55pm UTC](https://forum.sierrawireless.com/t/how-do-you-reset-wmod2a-g1900-version/2131/2 "2008-04-29T21:55:06Z")

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Try AT&F and ATZ

Yes - RS232 means RS232.

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**Author:** ![bbiandov](https://avatars.discourse-cdn.com/v4/letter/b/898d66/32.png) [@bbiandov](https://forum.sierrawireless.com/u/bbiandov)\
**Post date:** [April 29, 2008, 10:00pm UTC](https://forum.sierrawireless.com/t/how-do-you-reset-wmod2a-g1900-version/2131/3 "2008-04-29T22:00:22Z")

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Thanks, I am glad its real RS232!

However I dont have serial access… I wish I could do ATZ… I am looking for some harware reset method, I was hoping the reset pin does it but its just a power-on reset, NOT factory

Thanks  
B

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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 30, 2008, 5:49am UTC](https://forum.sierrawireless.com/t/how-do-you-reset-wmod2a-g1900-version/2131/4 "2008-04-30T05:49:59Z")

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You cannot do it without serial access.

Then again, you can’t do anything at all without serial access - so it doesn’t matter what settings it has, does it?! 8)

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**Author:** ![bbiandov](https://avatars.discourse-cdn.com/v4/letter/b/898d66/32.png) [@bbiandov](https://forum.sierrawireless.com/u/bbiandov)\
**Post date:** [April 30, 2008, 6:24am UTC](https://forum.sierrawireless.com/t/how-do-you-reset-wmod2a-g1900-version/2131/5 "2008-04-30T06:24:46Z")

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> [@awneil](#):
>
> You cannot do it without serial access.
> 
> Then again, you can’t do anything at all without serial access - so it doesn’t matter what settings it has, does it?! 8)

Well I dont have serial access because the start-up config is sooo screwed that it would not accept any commands. So in a way one can lock oneself out of the modem forever? There must be a way to overcome such condition, say you set it up to disable status replies and to disable AT commands. Will that render the modem useless forever?

In a USR world if that happens there are DIP switches that one can use to revered back to factory. I was expecting to see something like that in Wavecom too…🙂

Here is what I get from the modem when I call it from my other cell phone: