I have sdk from distributor.
657_09gg.Q2406B 1954500 102706 18:44
at+wopen=2 “OS 3.12”
succesfully upgrade firmware…
at+wopen=2 “OS 3.12” -->not change its should be 3.13
how to upgrade Open AT OS ?
which file to download to modem ?
to upgrade firmware its only one file that i downloaded to modem.
657c_full_q2406b…dwl is it correct?