diff --git a/README.md b/README.md
index 1412d96..9e83934 100644
--- a/README.md
+++ b/README.md
@@ -28,12 +28,6 @@ bootstrap file :
 dotinstall uninstall bootstrap
 ```
 
-Or update with `update` even in git mode
-
-```
-dotinstall update bootstrap
-```
-
 ## Boostrap file syntax
 
 `bootstrap` is a simple bash script sourced by `dotinstall`. The `bootstrap`
@@ -134,23 +128,6 @@ define_env "NOTMUCH_CONFIG" "~/.config/notmuch"
      displayed.
  - `OVERWRITE_FILE` : do the same with file
 
-## Return code
-
-This script return 0 if there is not error.
-
- - **1** : no bootstrap specified.
- - **2** : boostrap file not found
-
-### Git relative error codes
-
- - **20** : can't clone dotfile git repository.
- - **24** : can't update dotfile git repository.
- - **25** : local git repository does not exist.
-
-### Script relative error code
-
- - **128** : a binary checked by `chek_bin()` is not present
-
 ## Licence
 
 This software is licenced under the GNU-GPL 3 licence, you can found a copy of
diff --git a/src/dotinstall.sh b/src/dotinstall.sh
index 9469260..5126c4e 100755
--- a/src/dotinstall.sh
+++ b/src/dotinstall.sh
@@ -2,12 +2,10 @@
 
 # Personnal Dotfiles install script
 
-BIN_DIRECTORY="${HOME}/.local/bin"
-LIB_DIRECTORY="${HOME}/.local/lib"
+BIN_DIRECTORY="${HOME}/.local/bin/"
+LIB_DIRECTORY="${HOME}/.local/lib/"
 SYD_DIRECTORY="${HOME}/.config/systemd/user"
-CACHE_DIR="${HOME}/.cache/dotinstall"
-
-DOTREPO="${HOME}/.config/dotrepo"
+DOTREPO="${HOME}/.config/dotrepo/"
 ENV_FILE="${HOME}/.config/environment"
 
 # DEFAULT VALUES
@@ -16,7 +14,6 @@ OVERWRITE_FILE=0
 
 repository=""
 install=1
-update=0
 
 usage ()
 {
@@ -150,8 +147,7 @@ private:create_symblink ()
 private:clone_repository ()
 {
     # Clone a git repository and test if it has a bootstrap file
-    # $1 url
-    # $2 local repository
+    # $* url
     # return : local directory
 
     local ret
@@ -159,19 +155,6 @@ private:clone_repository ()
     [[ $? -ne 0 ]] && die "Can't clone_repository : $ret" 20 0
 }
 
-private:update_repository ()
-{
-    # Update a git repository
-    # $1 : local repository
-    
-    [ ! -d "$1" ] && die "Git update : directory $1 does not exist" 25 0
-    local current_dir=$(pwd)
-    local ret
-    cd "$1"
-    ret=$(git pull 2>&1)
-    [[ $? -ne 0 ]] && die "Can't update repository : $ret" 24 0
-}
-
 process_dirs () {
 
     # Process a directory than contains subdir, create symblink from each subdir
@@ -183,7 +166,7 @@ process_dirs () {
     local dest="${repository}/$1"
     printf "\nProcess directory %s\n" "$1"
 
-    [ ! -d "$dest" ] && { error "  -> source is not a directory $dest"; return; }
+    [ ! -d "$dest" ] && { error "  -> source is not a directory"; return; }
     [ ! -d "$dest" ] && { error "  -> destination is not a directory"; return; }
 
     while read d
@@ -326,82 +309,32 @@ define_env ()
 
 ## create bin directory
 [ ! -d $BIN_DIRECTORY ] && mkdir -p $BIN_DIRECTORY || printf "bin exist\n"
-[ ! -d $CACHE_DIR ] && mkdir -p $CACHE_DIR || printf "cache exist\n"
-# define mode : install, uninstall or update
-case $1 in
-    "uninstall")
-        install=0
-        printf "Activate uninstall mode\n"
-        shift
-        ;;
 
-    "update")
-        update=1;
-        printf "Activate update mode\n"
-        shift
-        ;;
-esac
-
-[ "$*" = "" ] && die "You must specify a bootstrap file or repo" 1 1
+# Test parameters : we need to know if it's a git repo or a file
+[[ $1 == "uninstall" || $1 == "-u" ]] && { install=0; printf "Activate uninstall mode\n"; shift; }
+[ "$*" = "" ] && die "You must specify a bootstrap file" 10 1
 
 if [[ $* =~ ^https://.*\.git$ || $* =~ ^ssh://.*\.git$ ]]
 then
-    check_bin "git"
+    bin_check "git"
     
     # Check
-    localrepo="${DOTREPO}/$(basename $* .git)"
-    if [ $update -eq 1 ]
+    localdir="${DOTREPO}/$(basename $* .git)"
+    [ -d "$localdir" ] && die "destination folder for git repository already exist" 21 0
+    
+    private:clone_repository "$*" "$localdir"
+    if [ -f "${localdir}/bootstrap" ]
     then
-        private:update_repository "$localrepo"
+        $0 "${localdir}/bootstrap"
+        exit $?
     else
-        if [ $install -eq 1 ]
-        then
-            private:clone_repository "$*" "$localrepo"
-        fi
+        die "Can't find a \`boostrap\` file in ${repo}" 22 0
     fi
-    bootstrap_file="${localrepo}/bootstrap"
 else
-    bootstrap_file="$*"
+    [ ! -f "$*" ] && die "$* does not exist" 10 1
+    private:get_bootstrap_path "$*"
+
+    # Include bootstrap
+    source $*
 fi
-
-[ ! -f "$bootstrap_file" ] && die "$bootstrap_file does not exist" 2 1
-
-private:get_bootstrap_path "$bootstrap_file"
-
-cache_file="${CACHE_DIR}/$(echo $repository | tr '/' '_')"
-
-if [ $update -eq 1 ]
-then
-    # Update mode
-    if [ -f "$cache_file" ]
-    then
-        if [ $(diff "$bootstrap_file" "$cache_file" > /dev/null; echo $?;) -eq 0 ]
-        then
-            printf "There is no difference between cached copy and the bootstrap file\n";
-            exit 0
-        else
-            # Uninstall old files
-            install=0
-            source "$cache_file"
-            rm "$cache_file"
-            install=1
-        fi
-    else
-        error "Can't found cached copy of bootstrap file, just install"
-    fi
-fi
-
-cp "$bootstrap_file" "$cache_file"
-
-# Include bootstrap
-source "$bootstrap_file"
-
-# remove cached file and repo if uninstall
-if [ $install -eq 0 ]
-then
-    printf "\nRemove files for complete uninstall\n"
-    rm $cache_file
-    rm -rf $repository
-fi
-
 exit 0