# Q2687 problem

**URL:** https://forum.sierrawireless.com/t/q2687-problem/4538
**Category:** Legacy AirPrime modules
**Created:** [June 29, 2010, 2:38pm UTC](https://forum.sierrawireless.com/t/q2687-problem/4538 "2010-06-29T14:38:49Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![HPel](https://avatars.discourse-cdn.com/v4/letter/h/ccd318/32.png) [@HPel](https://forum.sierrawireless.com/u/HPel)
#### Post date: [June 29, 2010, 2:38pm UTC](https://forum.sierrawireless.com/t/q2687-problem/4538/1 "2010-06-29T14:38:49Z")

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Hi,

I’ve been using Fastrack for some time now, quite successfully. Now, I’ve decided to add some new features so I got a new Q2687 and added some basic interfaces.

But, my Q2687 responds only to commands “AT” and “ATI”, all other AT commands report error, including at+wdwl (and at+wdwl?), at+cfun, at+wopen, at+cgmi, etc.

I’ve downloaded DWLWin 4.1.6.13. and tried to upload a new firmware, nothing works, regardless of the firmware version, or the order of starting the download or starting the CPU. I pulled the BOOT pin low via 10kOhm resistor as advised in many places in this forum, and I also tried pulling it up, according to the attached table found in many Q2687 files.

 ![](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/e/e687545541d0011a8138c2c33f2c78009092c7aa.JPG)  

Then, I disassembled my Fastrack Supreme, and replaced the CPU with the now Q2687, thinking that i went wrong somewhere with my PCB design, same thing…

So, this is the first time it’s being powered up, it hasn’t been used before. Could the blank flash cause problems?!?

I really appreciate the help…

Wireless CPU info:  
Model: Q2687  
FCC ID: O9EQ2687  
IC ID: 3651C-Q2687

```auto
at
OK
ati
56000
OK
ati?
56000
000
OK
ati1
255
OK
ati2
OK
OK
ati3
SoftK56V_B2.1_V7.23.00
OK
ati4
HDAUDIO Soft Data Fax Modem with SmartCP
OK
ati5
at+cgmi
250
OK
ati6
SoftK56
CModem Version 12
Rksample Version 342
OK
ati7
255
OK
ati8
Mar 17 2005 # 08:47:12
OK
ati9
CROATIA
OK
ati0
56000
OK
at+wdwl?
ERROR
at+wdwl
ERROR
at+cgmi
ERROR
at+cgmm
ERROR
```

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### Author: ![victorjd](https://avatars.discourse-cdn.com/v4/letter/v/9fc348/32.png) [@victorjd](https://forum.sierrawireless.com/u/victorjd)
#### Post date: [July 2, 2010, 1:57pm UTC](https://forum.sierrawireless.com/t/q2687-problem/4538/2 "2010-07-02T13:57:08Z")

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Looks like Conexant modem answers your commands. Not Wavecom Q2687 at all. Check your connection and find right COM.