# Retrieving Backtraces

**URL:** <https://forum.sierrawireless.com/t/retrieving-backtraces/4793>\
**Category:** Development tools\
**Created:** [December 23, 2010, 3:05pm UTC](https://forum.sierrawireless.com/t/retrieving-backtraces/4793 "2010-12-23T15:05:01Z")\
**Posts on this page:** 1\
**Showing post:** 5

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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:** [December 31, 2010, 12:41pm UTC](https://forum.sierrawireless.com/t/retrieving-backtraces/4793/5 "2010-12-31T12:41:34Z")

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> [@sjudith](#):
>
> So can I assume you have no backtraces on your unit ?

As I said, I’m pretty certain that there are backtraces in there - for one thing, because, when the unit crashes on TMT, it says there is no room for more backtraces!

But I shall have to check properly…

> [@](#):
>
> Please note that the ‘backtraces’ feature is available only in Development mode.

But that is not supported by earlier versions of firmware - see: [AT+WDM - undocumented?](https://forum.sierrawireless.com/t/at-wdm-undocumented/4792/1)

So, again, does this mean that backtraces from earlier versions cannot be retrieved and/or decoded by DS 1.2.0?  
That would be a very serious limitation indeed!

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