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I am doing BLE device development with a Nordic chipset running the S112 soft core and bumped into this problem too. I was seeing odd artifacts and differences between what was advertised vs. what was available after making the BLE connection. I got things working properly by enabling the Service Changed Nordic SDK configuration value in sdk_config.h. This sends the appropriate service changed notification to the host (iOS in this case) instructing the host to clear previously cached data about the peripheral when the connection is made. #define NRF_SDH_BLE_SERVICE_CHANGED 1 After building the firmware and loading it into the device all of the services and characteristics I had worked hard to create were displayed and behaving properly. Good luck to all who travel here - I hope that you can get things working properly for you too.