[nrf51][nrf52] nrfconnect installation instructions guide

newest nrfconnect-setup-3.10.0
The official download

1. After installation according to the process , find C:\Users\USER.nrfconnect-apps route .（USER It's your user name ）
2. Replace apps.json Content

{
    "pc-nrfconnect-ble": {
        "displayName": "Bluetooth Low Energy",
        "description": "General tool for development and testing with Bluetooth Low Energy",
        "homepage": "https://github.com/NordicSemiconductor/pc-nrfconnect-ble",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-ble"
    },
    "pc-nrfconnect-rssi": {
        "displayName": "RSSI Viewer",
        "description": "Live visualization of RSSI per frequency for nRF52832",
        "homepage": "https://github.com/NordicSemiconductor/pc-nrfconnect-rssi",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-rssi"
    },
    "pc-nrfconnect-ppk": {
        "displayName": "Power Profiler",
        "description": "App for use with Nordic Power Profiler Kits",
        "homepage": "https://github.com/NordicSemiconductor/pc-nrfconnect-ppk",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-ppk"
    },
    "pc-nrfconnect-programmer": {
        "displayName": "Programmer",
        "description": "Tool for flash programming of nRF SoCs",
        "homepage": "https://github.com/NordicSemiconductor/pc-nrfconnect-programmer",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-programmer"
    },
    "pc-nrfconnect-linkmonitor": {
        "displayName": "LTE Link Monitor",
        "description": "Link monitor and AT command terminal",
        "homepage": "https://github.com/NordicSemiconductor/pc-nrfconnect-linkmonitor",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-linkmonitor"
    },
    "pc-nrfconnect-tracecollector": {
        "displayName": "Trace Collector",
        "description": "Capture nRF91 modem trace",
        "homepage": "https://github.com/NordicSemiconductor/pc-nrfconnect-tracecollector",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-tracecollector"
    },
    "pc-nrfconnect-tracecollector-preview": {
        "displayName": "Trace Collector V2 preview",
        "description": "EXPERIMENTAL: Capture and convert nRF91 modem traces",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-tracecollector-preview"
    },
    "pc-nrfconnect-gettingstarted": {
        "displayName": "Getting Started Assistant",
        "description": "Guide to set up the nRF Connect SDK",
        "homepage": "https://github.com/NordicSemiconductor/pc-nrfconnect-gettingstarted",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-gettingstarted"
    },
    "pc-nrfconnect-dtm": {
        "displayName": "Direct Test Mode",
        "description": "RF PHY testing of Bluetooth Low Energy devices",
        "homepage": "https://github.com/NordicSemiconductor/pc-nrfconnect-dtm",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-dtm"
    },
    "pc-nrfconnect-toolchain-manager": {
        "displayName": "Toolchain Manager",
        "description": "Install and manage tools to develop with the nRF Connect SDK (NCS)",
        "homepage": "https://github.com/NordicPlayground/pc-nrfconnect-toolchain-manager",
        "url": "https://developer.nordicsemi.com/.pc-tools/nrfconnect-apps/pc-nrfconnect-toolchain-manager"
    }
}

3. Replace GitHub Mirror source
   find C:\Windows\System32\drivers\etc
   Add a row ：185.199.108.133 raw.githubusercontent.com