"Fault 04 00000000 !" after flashing 655

Legacy Open AT
1

Hi,

I just tried to upgrade my Q2406B from 6.40 to 6.55 for use with OpenAT 3.1. After flashing the core software, I just got the error

Fault 04 00000000 !

The only way out now probably is only by using the boot pin… I can’t enter any commands anymore…

I would like to know, if I did something wrong. Here is what I did:

at+wopen=0          
OK  
at+wopen=4          
OK  
at+wopen=3          
OK  

+WIND: 1        
at+wopen=2          
+WOPEN: 2,"AT  v02.01"                      

OK

+WIND: 7
at+wdwl
+WDWL: 0
at+cfun=1
OK

+WIND: 1
at+wdwl?
+WDWL: V02.12

OK

+WIND: 7
at+wdwl
+WDWL: 0
at+cfun=1Fault 04 00000000 !
Fault 04 00000000 !
Fault 04 00000000 !
Fault 04 00000000 !
Fault 04 00000000 !
Fault 04 00000000 !

What does Fault 04 mean anyway?

Thanks,
Jan

2

I’m not so sure what that error means but I too did upgrade my OpenAT only a couple of days ago. My module also is Q2406B, and I used DWL Win to upload the firmware, followed by dwl.dwl, 655__full_q2406b.dwl. I did not however, had any problems with this procedure.

3

Hi Jan,

A colleague of mine just recently needed to upgrade from 6.41c to 6.55 and had the same fault code. He found a 2-step solution:

  1. First upgrade the module to 651 firmware
  2. Then upgrade to 655 firmware.

Regards,
Arfy

4

Thank you Yul and Arfy!

The 2-step solution worked for me, too!!

Best Regards,
Jan

5

FYI, Wavecom have advised me that the answer’s in the release notes for 6.55. See section “5.2.1.2.2 Upgrade from X.4x versions to X.55”.
In fact, the explanation is that because the X.5x versions already had DOTA1, then you do not want to reinitialise the DOTA E2PROM memory (you will lose your DOTA settings which you probably don’t want to do if you’re using DOTA already). But because X.4x versions don’t have DOTA1, you need to initialise this memory (DWL file is dota.e2p) - and of course upgrading to X.51 version first also initialises this memory. So there are two methods for upgrading to X.55 depending on which OpenAT version you’re upgrading from!

Regards,
Arfy

6

I also had a similar problem only yesterday. I enquired my distributer and they have sent me the required file to upgrade from 641 to 655.

Yul

7

Hi, All!

I just tried to upgrade my M1306B (Q2406B) to 6.55 via HYPERTERMINAL. After flashing I just got the error

Fault 04 00000000 !

And I see this message after power reseting.

How to solve this problem?

As I understand, I should connect BOOT-PIN to GND and use DWLwin with DOTA.E2P,… My distributer is unreacheable now. Where can I download DWLwin and e2p-files?

Best Regards,
Evgeni.