Nano CH340G + SIM7600E-H: LTE insufficient signal despite strong network availability

V1.2 of what ? Are you sure the command doesn't exist. SimCom appears to have split the manual up into parts and the SSL stuff is in a separate document. See post #25. However, I can understand you not wanting to experiment too much more.

I'll make an offer for one. See your PMs. I said back in post #6 i'm looking to experiment in this area so this could be an opportunity.