Got a reply from iMST:
Thanks for your Email.
Sometimes, customers had problems when catching an impulse on the reset line.
So iC880A is reset and linux host is still running.
We have started a long term test with several iC880A-USB to reproduce this problem.
We will keep you informed about the results.
For the further communication please use our Ticket System:
https://wireless-solutions.de/support/
This is more easy to handle for us.
Best Regards,
Heinz
Note that I am using the SPI version