How to upgrade Q2406b to 6.57 firmware?

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

After update “BAD SOFTWARE” is displayed.


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.


Yes, I’ve tried - no error then.

Had anyone ever updated Q2506b to 6.57 firmware?