diff --git a/README.md b/README.md
index 2da8193..d2c9129 100644
--- a/README.md
+++ b/README.md
@@ -12,8 +12,11 @@ cd lib/sw_apps/zynq_fsbl/src/ && make BOARD=zed CFLAGS=-DFSBL_DEBUG_INFO
 Requirements [TBC]:
 - cmake
 - arm-none-eabi-gcc
+- doxygen 
+- graphviz
 
-
+Configure doxygen:
+- export DOT_PATH=/usr/local/bin
 
 satisfy Rust requirements 
 ```sh
@@ -21,11 +24,14 @@ cd ../mission_rust
 cargo update 
 rustup toolchain install nightly
 rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu
-rustup override set default nightly
+rustup override set nightly
 cargo build -Z build-std
 ```
 
+In .../obsw/
 ```sh
+git submodule init
+git submodule update
 mkdir build_cli
 cd build_cli
 cmake -DCMAKE_TOOLCHAIN_FILE=../bsp_z7/cmake/arm-none-eabi.toolchain ..