Firmware Download Error

Legacy Open AT
1

I am trying to download the latest 6.61 firmware (C61b_q2687h.dwl) provided with the released Open AT v4.11 into a Q2686 that is currently running firmware:

660_09gg.Q2686H 1952244 030806 18:53

However, when I initiate a AT+WDWL and try and initiate a 1K XMODEM send from Hyperterm (version 5.1 on Windows XP), I get the following error message

*** ERROR IN DECOMPRESSION ***

followed by a bunch of garbage characters and the file download terminates.

This happens with both of the Q2686 modules that I received with the dev kit. I have never loaded any applications into the modules and I have tried stopping any potential applications using AT+WOPEN=0

Does anyone have any thoughts on how I can upgrade my firmware, so I can start using the latest release?

Any help would be much appreciated.

Thanks

2

Apparently, the version of downloader in the firmware that was already in the CPU was incompatible with the one I was trying to download. According to Wavecom release notes for the firmware v6.61, I first downloaded the new downloader (dwl.dwl) and after CPU reset was able to download the new firmware.

3

You have Q2686H or Q2686F module? With my dev KIT i’v got Q2686F module, wich OS cannot be upgraded.

4

The part merely states: “Model: Q2686”. However, the last letter in the bar code is indeed “H” and I have been using memory type “H” firmware for my development projects with no apparent problems, so I assume I have a Q2686H.