Update README.md

README.md

@@ -4,11 +4,11 @@ This repository contains the bootloader of the [Ultimate Hacking Keyboard](https
 
 The codebase of the bootloader actually resides in [targets/MK22F51212/src](targets/MK22F51212/src).
 
-## Build
+## Building the bootloader
 
 Install [Kinetis Design Studio](http://www.nxp.com/products/software-and-tools/run-time-software/kinetis-software-and-tools/ides-for-kinetis-mcus/kinetis-design-studio-integrated-development-environment-ide:KDS_IDE) (KDS) and import the project by invoking File -> Import -> General -> Existing Projects into Workspace, select the ` targets/MK22F51212/kds/freedom_bootloader` directory, and click on the Finish button. At this point, you should be able to build the firmware in KDS.
 
-## Flash the bootloader
+## Flashing the bootloader
 
 First up, let's take care of the physical connections:
 
@@ -28,21 +28,24 @@ erase
 
 Lastly, Use KDS to build and upload the firmware to the MCU.
 
-## Upload the application firmware via the bootloader
+## Uploading the application firmware via the bootloader
+
+After the above steps, the UHK should enumerate as the bootloader over USB.
+
+You can use the [blhost utility](/bin/Tools/blhost) to upload the [application firmware](https://github.com/UltimateHackingKeyboard/firmware) via the bootloader. Unfortunately, the Linux version of this tool does not seem to work due to the bug.
+
+Alternatively, you can use the Windows-only [KinetisFlashTool](/master/bin/Tools/KinetisFlashTool/win) GUI application.
+
+## Test firmwares
 
 To test the bootloader a binary properly configured has been added to the root folder of this repository. This binary is based on the UHK_Right Firmware project. 
 To understand these modifications and apply them to the current version of the UHK Right firmware, follow the procedure in "Adapting UHK Project to KBOOT.docx" (Work in progress...)
 
-The device can be controlled and erased/programmed easily using
-the blhost.exe tool provided by NXP and included in this repository. A GUI with a reduced set of features has also been created for Windows (KinetisFlashTool.exe).
-
 ## Key features
 
- - Communication through HID with any PC without the need of an additional driver.
+ * Communication through HID with any PC without the need of an additional driver.
- - Automatic timeout and jump to user application without any action from the user.
+ * Automatic timeout and jump to user application without any action from the user.
- - If no valid application is present, the bootloader will keep waiting for communication through the HID USB port.
+ * If no valid application is present, the bootloader will keep waiting for communication through the HID USB port.
- - Every command sent to the bootloader includes a validation process inside the MCU to avoid any error in the communication.
+ * Every command sent to the bootloader includes a validation process inside the MCU to avoid any error in the communication.
- - The memory area of the bootloader is protected, so even if the update fails, user just needs to do a Power on Reset (Plug and Unplug the Keyboard) in order to launch the bootloader again.
+ * The memory area of the bootloader is protected, so even if the update fails, user just needs to do a Power on Reset (Plug and Unplug the Keyboard) in order to launch the bootloader again.
- - Smart reset behavior: If the MCU has been reset by the user (SW reset or Reset-pin-to-GND short) a timeout will be enabled.
+ * Smart reset behavior: If the MCU has been reset by the user (SW reset or Reset-pin-to-GND short) a timeout will be enabled. If the reset is a Power on Reset (meaning that the user has just connected the keyboard to the power) it will jump to the application firmware if its present on the memory.
- If the reset is a Power on Reset (meaning that the user has just connected the keyboard to the power) it will jump to the
- application firmware if its present on the memory.