as long as i initilize theble nus service it will restart and return the error code： 4 。

[liuzichen]

[liuzichen]

this is my ram setting

[Kenneth]

This looks to be related to this:
https://devzone.nordicsemi.com/f/nordic-q-a/72167/after-nrf51822-add-new-service-can-not-search-for-the-ble