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Here is the problem, we are able to get the proper response when we send a simple HTTP request through AT-commands of SIM900a module.
But unable to get the proper response for HTTPS(secure) request through AT-commands it shows the 601 and 600 means "Network error "and "Not http PDU's".
Also...
I also encountered the same problem！Please get me a way about "an more updated firmware version"
my sim900A version is 1137B08SIM900M64_ST_DTMF_JD_MMS
Thanks a lot
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