# Device not activated Lora feather 32u4 RFM9X **URL:** \ **Category:** End Devices (Nodes)\ **Created:** [August 13, 2018, 10:51am UTC](https://www.thethingsnetwork.org/forum/t/device-not-activated-lora-feather-32u4-rfm9x/16797 "2018-08-13T10:51:54Z")\ **Posts on this page:** 1\ **Showing post:** 17
**Author:** ![arjanvanb](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/arjanvanb/32/46626_2.png) [@arjanvanb](https://www.thethingsnetwork.org/forum/u/arjanvanb)\ **Post date:** [August 15, 2018, 8:17pm UTC](https://www.thethingsnetwork.org/forum/t/device-not-activated-lora-feather-32u4-rfm9x/16797/17 "2018-08-15T20:17:10Z")
Using a hardcoded SF11 or SF12 is not allowed, as it takes a lot of airtime, increasing the chance for collisions with other users of the network. See [Limitations: data rate, packet size, 30 seconds uplink and 10 messages downlink per day Fair Access Policy](https://www.thethingsnetwork.org/forum/t/limitations-data-rate-packet-size-30-seconds-uplink-and-10-messages-downlink-per-day-fair-access-policy/1300). So try to lower that by trying SF10, SF9, SF8, … Also, you won’t get a confirmation unless you use “conformed downlinks”, which you should use very sparsely (if at all) as explained in the same link. Next steps: - Re-generate your secret keys, as you’ve exposed them in your first post. Go into the device settings, and click the generate icon for both secret keys: - While at that settings page, for testing you might also want to disable: - Change the text format into a proper 2 byte number; [Best practices to limit application payloads](https://www.thethingsnetwork.org/forum/t/best-practices-to-limit-application-payloads/1302). Enjoy! --- _[View the full topic](https://www.thethingsnetwork.org/forum/t/device-not-activated-lora-feather-32u4-rfm9x/16797)._