How to upgrade Q2406b to 6.57 firmware?

Legacy Open AT
1

Is it even possible? I try to update module with firmware from Open AT SDK folder and DwlWin.

After update “BAD SOFTWARE” is displayed.

2

Hi,

Did you try to download the previous firmware again from where you have upgraded the firmware to 6.57.On reverting back also,is it giving the same error.

Thanks.

3

Yes, I’ve tried - no error then.

4

Had anyone ever updated Q2506b to 6.57 firmware?