EM160 lte1 mbim: error 7

with EM160 for a few weeks I sporadically have this error in the logs:
lte1 mbim: error: >>> And service: connect, command: connect, error: 7
the connection drops and then reconnects. I can’t find any documentation on line about errors to understand the problem.

Thanks for your query in Quectel forums.
Could you please send me the log information you see and the current EM160 driver version?
Thanks.

In the log lines it says exactly what I wrote in the initial post:
lte1 mbim: error: >>> And service: connect, command: connect, error: 7
my driver version is: EM160RGLAUR02A05M4G

Thanks for your query in Quectel forums.
Please use the latest software version of EM160 for testing, EM160RGLAUR02A07M4G,thank you.
link:https://pan.baidu.com/s/1EjookXIkv2_ulTbrIq_xpg
Extraction code:f468