Still receiving (old) data even if my device is shut down

Gateways
21

Yes after changing the NWKSKEY and the APPSKEY only expected traffic is showing up.

I do not (intentionally) send downlink to the device. (it’s not implemented on the feather)
I can not tell you if and when the feather sent f_cnt range 1178 to 1188 (I have no means to look it up)

22

I did some calculations about f_cnt:
On the other application where I get the same “wrong” data since yesterday I see that legitime data are sent with f_cnt: 6478 (counting), “wrong” data from iot-gw-sc-c01 have f_cnt: 4832 (counting) coming in 10 seconds later.
So as I send data every 5 Minutes, the Data with f_cnt 4832 are 5 Days 17 Hours older compared to the actual data with f_cnt 6478

23

The only structural solution is to switch to OTAA. Because every time you program new credentials and reset the device after a number of uplinks you’ll run into the same issue.

24

Thanks a lot for all your Help and Suggestions. I will try to switch to OTAA (not sure if it will work with my feathers)
The suspicious Gateway by the way is not sending old data anymore.