diff --git a/README.md b/README.md
index f37860c..7c9ab91 100644
--- a/README.md
+++ b/README.md
@@ -81,10 +81,11 @@ The `bootloader` is started first and immediately jumps to the `application` if
 The `application` image is the main application and is implemented in `application.c`.
 It is up to the application to advertise USB DFU support (i.e. as does the provided USB CDC ACM example).
 
-The `bootlaoder` image will be flashed using SWD (Serial Wire Debug).
+The `bootloader` image will be flashed using SWD (Serial Wire Debug).
 For that you need an SWD adapter.
-The `Makefile` uses a Black Magic Probe (per default), or a ST-Link V2 along OpenOCD software.
+The `Makefile` uses a ST-Link V2 programmer along OpenOCD software (default), or Black Magic Probe.
 To flash the `booltoader` using SWD run `rake flash_booloader`.
+If the development board uses the CKS32 chip STM32 alternative, use `CPUTAPID=0x2ba01477 rake flash_booloader`.
 
 Once the `bootloader` is flashed it is possible to flash the `application` over USB using the DFU protocol by running `rake flash`.
 To force the bootloader to start the DFU mode press the user button or short a pin, depending on the board.