Hi,
we configure a GATT Server with a characteristic that is configuered for write with authorization. If we then try to write one byte to this characteristic from the client, we get an ErrorResponse with UnlikelyError.
The Error seems to be send directly from the softdevice, since it is send even before we can handle the authorization request. If the characteristic is configuered for write without authorization it works fine, so do writes of multiple bytes. We also tried using NRFConnect on PC and Mobile as Clients to make sure its not caused by our client Firmware.
This only happened after we migrated from SDK12.2 with SoftDevice 3.1 to SDK15 with SoftDevice 6.1. If we revert to the old state it works.
If someone has an idea what could have been changed since SDK12.2 with Softdevice3.1 that could cause this issue, I would appreciate some help.
Best regards,
Niclas