Retrieves stored device-level persistent user data
Blob — the stored user data
This method retrieves user-defined data from the imp’s Flash storage that was previously stored using imp.setuserconfiguration() and returns it as a blob. If there is no user data stored in the device, the method returns
Note On all imps, the user-defined data is stored securely within on-die flash or, with the imp005, on external flash and encrypted with per-device keys.