diff --git a/.gitmodules b/.gitmodules
index 7c188be..1cff8b0 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "contrib/lwip"]
 	path = contrib/lwip
 	url = https://git.savannah.gnu.org/git/lwip.git
+[submodule "fsbl-compiled"]
+	path = fsbl-compiled
+	url = ../fsbl-compiled
diff --git a/BUILD_WITH_CMAKE.md b/BUILD_WITH_CMAKE.md
index 917bdf5..bfc8743 100644
--- a/BUILD_WITH_CMAKE.md
+++ b/BUILD_WITH_CMAKE.md
@@ -1,15 +1,15 @@
-
 ## Requirements:
 
 ### Known Issues
 Ubuntu 22.04 has some version issues with the compile toolchain, consider using a newer version or other distribution or docker. Or solve the issue and add it here.
 
 ### Steps 
+Install
 1. `cmake`
 2. `arm-none-eabi-gcc arm-none-eabi-gcc arm-none-eabi-binutils arm-none-eabi-gdb arm-none-eabi-newlib`
 3. `doxygen` 
 4. `graphviz`
-5. `rustup`  || Install using your packet manager or alternatively use the rust install script:  `curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh`
+5. `rustup`  || Install using your packet manager or alternatively use the rust install script:  `curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh` (confirm default toolchain | nightly | complete | modify path variable: yes)
 
 
 
diff --git a/fsbl-compiled b/fsbl-compiled
new file mode 160000
index 0000000..e404fcf
--- /dev/null
+++ b/fsbl-compiled
@@ -0,0 +1 @@
+Subproject commit e404fcf733e94adf702eb8c6d03f46ed8b61cdce