I believe you are incorrect that your website has been updated to inform your customer that jamming is not a function on the FMC130 because here under special features it specifically mentions;
Also here the second paragraph plainly states;
keeps all of the functionalities from FMB130
which of course features Jamming Detection so this seems to contradict your statement above.
In addition in the FMC130 Quick Manual v1.3 here under Features/Scenarios the 3rd item clearly states Jamming Detection.
There may be more but I'm just sayin'
I too find it difficult to believe a newer device advertised as developed on the existing FMB130 and building on top misses such a glaring feature. I am guessing if there was going to be a firmware update to enable the Quectel module to support Jamming Detection it would have been released by now so I'm not holding my breath...FMC230 maybe?
Thanks & kind regards,