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Updated firmware images
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firmware/README.md
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firmware/README.md
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## Example Firmware Packages
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These images were copied from the Nordic [nRF5 SDK version 14.2.0](http://www.nordicsemi.com/eng/nordic/Products/nRF52-DK/nRF5-SDK-zip/59014).
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An entire device firmware can be broken down into three images, each of which can be update separately:
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- Soft Device
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- Bootloader
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- Application
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Each package can have up to two images in it, the first of which is _one_ of the following:
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- Soft Device
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- Bootloader
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- Soft Device and Bootloader
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The second image can then be an `application` image.
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## bootloader_secure_ble_s132.zip
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This package contains a single `bootloader` image which allows further updates from boot.
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## softdevice_bootloader_secure_ble_s132.zip
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This package contains a single image contaning both a `soft device` and a `bootloader`.
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## ble_app_buttonless_dfu_s132.zip
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This package contains a `buttonless application` image which allows futher updates without the need to physically touch the device.
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## bootloader_secure_ble_app_buttonless_dfu_s132.zip
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This package contains _two_ images; a `bootloader` and a `buttonless application` image which allows futher updates.
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## ble_app_hrs_s140.zip
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This package contains a heart rate monitor `application` which allows further updates. To activate the update mode, hold `button 4` while the device boots.
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