Reading the #SwiftLang MCU Manager code for #Mynewt and #ZephyrIOT OS... Easiest way to understand the proposed BLE flashing protocol for #PineTime Smart Watch @PINE64 https://www.github.com/JuulLabs-OSS/mcumgr-ios/tree/master/Source%2FBluetooth%2FMcuMgrBleTransport.swift