diff --git a/doc/DISCOVER.md b/doc/DISCOVER.md
index 7e5ca0e..4fbcff2 100644
--- a/doc/DISCOVER.md
+++ b/doc/DISCOVER.md
@@ -25,7 +25,7 @@ Access to a new repo, add your URL to file [source_repo_addons.csv](../source_re
 Execute script:
 ```bash
 ./script/git_repo_manifest.py
-git checkout -b new_branch
+git checkout -b NEW_BRANCH
 git commit -am "Add new repo"
 ./script/install_locally_dev.sh
 ```
diff --git a/doc/UPDATE.md b/doc/UPDATE.md
new file mode 100644
index 0000000..be9f5ae
--- /dev/null
+++ b/doc/UPDATE.md
@@ -0,0 +1,24 @@
+# Update ERPLibre
+## Update all repo from origin source
+The update is done on branch 12.0, you need to validate this branch exist.
+
+1. Make sure all repo git is conform, remove all argument depth from manifest and regenerate.
+You can clean all and regenerate
+```bash
+./script/clean_repo_manifest.sh
+./script/install_locally_dev.sh
+```
+
+2. Update all remote with ssh/git
+```bash
+./script/git_change_remote_https_to_git.py
+```
+
+3. Run update script
+```bash
+./script/git_update_repo.py
+```
+
+4. Push force all needed repo, manage rebase conflict
+
+5. Test a clone with dev, check file [DEVELOPMENT.md](./DEVELOPMENT.md)
diff --git a/requirements.txt b/requirements.txt
index 124164f..4ae04ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,5 @@ agithub
 gitpython
 PyYAML
 retrying
-xmltodict
\ No newline at end of file
+xmltodict
+openupgradelib
diff --git a/script/git_repo_manifest.py b/script/git_repo_manifest.py
index 9076d64..1bd9fe1 100755
--- a/script/git_repo_manifest.py
+++ b/script/git_repo_manifest.py
@@ -30,6 +30,8 @@ def get_config():
                         help="Path of repo to change remote, including submodule.")
     parser.add_argument('--clear', action="store_true",
                         help="Create a new manifest and clear old configuration.")
+    parser.add_argument('-m', '--manifest', default="manifest/default.dev.xml",
+                        help="The manifest file path to generate.")
     args = parser.parse_args()
     return args
 
@@ -53,7 +55,7 @@ def main():
         dct_remote = {}
         dct_project = {}
     git_tool.generate_repo_manifest(lst_repo_organization,
-                                    output=f"{config.dir}manifest/default.dev.xml",
+                                    output=f"{config.dir}{config.manifest}",
                                     dct_remote=dct_remote, dct_project=dct_project)
     git_tool.generate_install_locally()
 
diff --git a/script/git_update_repo.py b/script/git_update_repo.py
new file mode 100755
index 0000000..e1d80bb
--- /dev/null
+++ b/script/git_update_repo.py
@@ -0,0 +1,113 @@
+#!./venv/bin/python
+import os
+import sys
+import argparse
+import logging
+from git import Repo  # pip install gitpython
+from retrying import retry  # pip install retrying
+
+new_path = os.path.normpath(os.path.join(os.path.dirname(__file__), '..'))
+sys.path.append(new_path)
+
+from script.git_tool import GitTool
+
+_logger = logging.getLogger(__name__)
+
+
+def get_config():
+    """Parse command line arguments, extracting the config file name,
+    returning the union of config file and command line arguments
+
+    :return: dict of config file settings and command line arguments
+    """
+    # TODO update description
+    parser = argparse.ArgumentParser(
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        description='''\
+''',
+        epilog='''\
+'''
+    )
+    parser.add_argument('-d', '--dir', dest="dir", default="./",
+                        help="Path of repo to change remote, including submodule.")
+    args = parser.parse_args()
+    return args
+
+
+def main():
+    config = get_config()
+    git_tool = GitTool()
+
+    lst_repo = git_tool.get_source_repo_addons(repo_path=config.dir,
+                                               add_repo_root=False)
+    lst_repo_organization = [git_tool.get_transformed_repo_info_from_url(
+        a.get("url"), repo_path=config.dir, get_obj=True,
+        is_submodule=a.get("is_submodule"), sub_path=a.get("sub_path"),
+        revision=a.get("revision"), clone_depth=a.get("clone_depth"))
+        for a in lst_repo]
+
+    i = 0
+    total = len(lst_repo)
+    for repo in lst_repo_organization:
+        i += 1
+        print(f"\nNb element {i}/{total} - {repo.path}")
+
+        # TODO validate with default to ignore duplicate url, if same remote repo
+        if not repo.is_submodule:
+            continue
+        upstream_name = f"ERPLibre_update_12/{git_tool.default_branch}"
+        remote_branch_name = f"{upstream_name}/{git_tool.default_branch}"
+        git_repo = Repo(repo.relative_path)
+        # 1. Add remote if not exist
+        try:
+            upstream_remote = git_repo.remote(upstream_name)
+            print(f'Remote "{upstream_name}" already exists in {repo.relative_path}')
+        except ValueError:
+            upstream_remote = retry(
+                wait_exponential_multiplier=1000,
+                stop_max_delay=15000
+            )(git_repo.create_remote)(upstream_name, repo.url_https)
+            print('Remote "%s" created for %s' % (upstream_name, repo.url_https))
+
+        # 2. Fetch the remote source
+        retry(wait_exponential_multiplier=1000, stop_max_delay=15000)(
+            upstream_remote.fetch)()
+        print('Remote "%s" fetched' % upstream_name)
+
+        # 3. Rebase actual branch with new branch
+        rev = repo.revision if repo.revision else git_tool.default_branch
+        try:
+            git_repo.git.checkout(rev)
+        except:
+            if repo.revision:
+                rev = f"{repo.original_organization}/{repo.revision}"
+            else:
+                rev = f"{repo.original_organization}/{git_tool.default_branch}"
+
+            git_repo.git.checkout("--track", rev)
+        actual_commit = git_repo.git.rev_parse("HEAD")
+        try:
+            git_repo.git.rebase(remote_branch_name)
+        except Exception as e:
+            print(e, file=sys.stderr)
+        new_commit = git_repo.git.rev_parse("HEAD")
+
+        if actual_commit == new_commit:
+            print("== No diff ==")
+        else:
+            print(f"== Old commit {actual_commit} - new commit {new_commit}")
+            # push
+            try:
+                retry(wait_exponential_multiplier=1000, stop_max_delay=15000)(
+                    git_repo.git.push)(repo.organization, rev)
+            except:
+                print("Cannot push, maybe need to push force or resolv rebase conflict",
+                      file=sys.stderr)
+                print(f"cd {repo.path}")
+                print(f"git diff ERPLibre/v#.#.#..HEAD")
+                print(f"git push --force {repo.organization} {rev}")
+                print(f"cd -")
+
+
+if __name__ == '__main__':
+    main()
diff --git a/source_repo_addons.csv b/source_repo_addons.csv
index a98b03d..1842392 100644
--- a/source_repo_addons.csv
+++ b/source_repo_addons.csv
@@ -81,7 +81,7 @@ https://github.com/OCA/timesheet.git,addons,12.0_support_project_agile_timesheet
 https://github.com/OCA/web.git,addons,,
 https://github.com/OCA/website.git,addons,12.0_dev,
 https://github.com/OCA/wms.git,addons,,
-https://github.com/odoo/odoo.git,.,12.0_feature_5_star_CRM,1
+https://github.com/odoo/odoo.git,.,ERPLibre/12.0,1
 https://github.com/odooaktiv/QuotationRevision.git,addons,,
 https://github.com/openeducat/openeducat_erp.git,addons,,
 https://github.com/SanteLibre/santelibre_addons.git,addons,master,