diff --git a/README.md b/README.md
index ba7a9f8..467a535 100755
--- a/README.md
+++ b/README.md
@@ -14,11 +14,11 @@ Version Pro du ModuleAir avec CM4, SaraR4 et ecran Matrix LED p2 64x64.
 
 ## Script
 
-´´´
+```
 wget http://gitea.aircarto.fr/PaulVua/moduleair_pro_4g/raw/branch/main/installation.sh
 chmod +x installation.sh
 ./installation.sh
-´´´
+```
 
 ## Detailed
 ```
diff --git a/installation.sh b/installation.sh
index 188644f..a146deb 100644
--- a/installation.sh
+++ b/installation.sh
@@ -291,49 +291,36 @@ set_permissions() {
     print_success "Device permissions set"
 }
 
-# Compile matrix library
-compile_matrix_library() {
-    print_step "Compiling RGB LED matrix library..."
-    
-    if [ -d "/var/www/moduleair_pro_4g/matrix/lib" ]; then
-        cd /var/www/moduleair_pro_4g/matrix/lib
-        if make; then
-            print_success "Matrix library compiled successfully"
-        else
-            print_error "Failed to compile matrix library"
-            exit 1
-        fi
-    else
-        print_warning "Matrix library directory not found - skipping compilation"
-    fi
-}
-
-# Compile matrix display programs
-compile_matrix_programs() {
-    print_step "Compiling matrix display programs..."
+# Check matrix binaries
+check_matrix_binaries() {
+    print_step "Checking matrix display binaries..."
     
     local programs=(
         "screenNetwork/network_status"
         "screenSensors/displayAll4_v2"
         "screenSensors/displayCO2_PM_Network"
         "screenSensors/blank_screen"
+        "welcomeScreen/welcome_screen"
     )
     
     for program in "${programs[@]}"; do
-        local source_file="/var/www/moduleair_pro_4g/matrix/${program}.cc"
-        local output_file="/var/www/moduleair_pro_4g/matrix/${program}"
+        local binary_file="/var/www/moduleair_pro_4g/matrix/${program}"
         
-        if [ -f "$source_file" ]; then
-            print_status "Compiling $program..."
-            if g++ -I/var/www/moduleair_pro_4g/matrix/include -L/var/www/moduleair_pro_4g/matrix/lib "$source_file" -o "$output_file" -lrgbmatrix -lsqlite3; then
-                print_success "$program compiled"
-            else
-                print_warning "Failed to compile $program"
-            fi
+        if [ -f "$binary_file" ] && [ -x "$binary_file" ]; then
+            print_success "Matrix binary found: $program"
         else
-            print_warning "Source file not found: $source_file"
+            print_warning "Matrix binary missing or not executable: $program"
         fi
     done
+    
+    # Check matrix library
+    if [ -f "/var/www/moduleair_pro_4g/matrix/lib/librgbmatrix.a" ]; then
+        print_success "Matrix library found: librgbmatrix.a"
+    else
+        print_warning "Matrix library missing: librgbmatrix.a"
+    fi
+    
+    print_success "Matrix binaries check completed"
 }
 
 # Setup systemd services
@@ -419,11 +406,12 @@ final_status() {
     print_header "INSTALLATION SUMMARY"
     echo -e "${GREEN}✓${NC} System packages installed"
     echo -e "${GREEN}✓${NC} Python packages installed"
+    echo -e "${GREEN}✓${NC} Repository cloned"
     echo -e "${GREEN}✓${NC} Directory structure created"
     echo -e "${GREEN}✓${NC} Apache web server configured"
     echo -e "${GREEN}✓${NC} Hardware interfaces enabled"
     echo -e "${GREEN}✓${NC} Device permissions set"
-    echo -e "${GREEN}✓${NC} Matrix library compiled"
+    echo -e "${GREEN}✓${NC} Matrix binaries verified"
     echo -e "${GREEN}✓${NC} Systemd services configured"
     echo -e "${GREEN}✓${NC} Boot scripts created"
     
@@ -456,8 +444,7 @@ main() {
     configure_apache
     enable_hardware
     set_permissions
-    compile_matrix_library
-    compile_matrix_programs
+    check_matrix_binaries
     setup_services
     create_boot_script
     final_status