diff --git a/Start Stable Diffusion UI.cmd b/Start Stable Diffusion UI.cmd
index 20cac347..f5fa3a3c 100644
--- a/Start Stable Diffusion UI.cmd	
+++ b/Start Stable Diffusion UI.cmd	
@@ -24,7 +24,6 @@ call git --version
 call python --version
 
 @rem Download the rest of the installer and UI
-@REM call installer\install-sd-ui.bat
 call python installer\installer\main.py
 
 pause
\ No newline at end of file
diff --git a/installer/installer/app.py b/installer/installer/app.py
index 5dea5fb9..0bbfd6bf 100644
--- a/installer/installer/app.py
+++ b/installer/installer/app.py
@@ -3,9 +3,11 @@ import json
 
 # config
 PROJECT_REPO_URL = 'https://github.com/cmdr2/stable-diffusion-ui.git'
-DEFAULT_UPDATE_BRANCH = 'installer_new'
-
+DEFAULT_PROJECT_BRANCH = 'installer_new'
 PROJECT_REPO_DIR_NAME = 'project_repo'
+
+STABLE_DIFFUSION_REPO_URL = 'https://github.com/basujindal/stable-diffusion.git'
+DEFAULT_STABLE_DIFFUSION_COMMIT = 'f6cfebffa752ee11a7b07497b8529d5971de916c'
 STABLE_DIFFUSION_REPO_DIR_NAME = 'stable-diffusion'
 
 START_CMD_FILE_NAME = os.environ['START_CMD_FILENAME']
diff --git a/installer/installer/main.py b/installer/installer/main.py
index e13e1609..b92feb31 100644
--- a/installer/installer/main.py
+++ b/installer/installer/main.py
@@ -6,11 +6,13 @@ sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
 from installer.tasks import (
     fetch_project_repo,
     apply_project_update,
+    fetch_stable_diffusion_repo,
 )
 
 tasks = [
     fetch_project_repo,
     apply_project_update,
+    fetch_stable_diffusion_repo,
 ]
 
 def run_tasks():
diff --git a/installer/installer/tasks/fetch_project_repo.py b/installer/installer/tasks/fetch_project_repo.py
index b920072e..858758bf 100644
--- a/installer/installer/tasks/fetch_project_repo.py
+++ b/installer/installer/tasks/fetch_project_repo.py
@@ -5,7 +5,7 @@ from installer import app, helpers
 project_repo_git_path = path.join(app.project_repo_dir_path, '.git')
 
 def run():
-    branch_name = app.config.get('update_branch', app.DEFAULT_UPDATE_BRANCH)
+    branch_name = app.config.get('update_branch', app.DEFAULT_PROJECT_BRANCH)
 
     if path.exists(project_repo_git_path):
         helpers.log(f"Stable Diffusion UI's git repository was already installed. Updating from {branch_name}..")
@@ -17,8 +17,10 @@ def run():
         helpers.log("\nDownloading Stable Diffusion UI..\n")
         helpers.log(f"Using the {branch_name} channel\n")
 
-        if helpers.run(f'git clone -b "{branch_name}" {app.PROJECT_REPO_URL} "{app.project_repo_dir_path}"'):
+        if helpers.run(f'git clone {app.PROJECT_REPO_URL} "{app.project_repo_dir_path}"'):
             helpers.log("Downloaded Stable Diffusion UI")
         else:
             helpers.show_install_error(error_msg="Could not download Stable Diffusion UI")
             exit(1)
+
+        helpers.run(f'git checkout "{branch_name}"', run_in_folder=app.project_repo_dir_path)
diff --git a/installer/installer/tasks/fetch_stable_diffusion_repo.py b/installer/installer/tasks/fetch_stable_diffusion_repo.py
new file mode 100644
index 00000000..5a26aaf4
--- /dev/null
+++ b/installer/installer/tasks/fetch_stable_diffusion_repo.py
@@ -0,0 +1,46 @@
+from os import path
+
+from installer import app, helpers
+
+patch_file_names = [
+    'sd_custom.patch',
+]
+
+stable_diffusion_repo_git_path = path.join(app.stable_diffusion_repo_dir_path, '.git')
+patches_dir_path = path.join(app.installer_dir_path, 'patches')
+
+is_developer_mode = app.config.get('is_developer_mode', False)
+
+def run():
+    fetch_repo()
+    apply_patches()
+
+def fetch_repo():
+    commit_id = app.config.get('stable_diffusion_commit', app.DEFAULT_STABLE_DIFFUSION_COMMIT)
+
+    if path.exists(stable_diffusion_repo_git_path):
+        helpers.log(f"Stable Diffusion's git repository was already installed. Using commit: {commit_id}..")
+
+        if not is_developer_mode:
+            helpers.run("git reset --hard", run_in_folder=app.stable_diffusion_repo_dir_path)
+            helpers.run(f'git checkout "{commit_id}"', run_in_folder=app.stable_diffusion_repo_dir_path)
+            helpers.run("git pull", run_in_folder=app.stable_diffusion_repo_dir_path)
+    else:
+        helpers.log("\nDownloading Stable Diffusion..\n")
+        helpers.log(f"Using commit: {commit_id}\n")
+
+        if helpers.run(f'git clone {app.STABLE_DIFFUSION_REPO_URL} "{app.stable_diffusion_repo_dir_path}"'):
+            helpers.log("Downloaded Stable Diffusion")
+        else:
+            helpers.show_install_error(error_msg="Could not download Stable Diffusion")
+            exit(1)
+
+        helpers.run(f'git checkout "{commit_id}"', run_in_folder=app.stable_diffusion_repo_dir_path)
+
+def apply_patches():
+    if is_developer_mode:
+        return
+
+    for patch_file_name in patch_file_names:
+        patch_file_path = path.join(patches_dir_path, patch_file_name)
+        helpers.run(f"git apply {patch_file_path}", run_in_folder=app.stable_diffusion_repo_dir_path)