diff --git a/installer/ogboot_installer.py b/installer/ogboot_installer.py
index bdc48d1..12099e0 100755
--- a/installer/ogboot_installer.py
+++ b/installer/ogboot_installer.py
@@ -11,6 +11,7 @@ import platform, os, sys, subprocess, datetime, shutil, pwd, glob, logging, dist
 ipxe_repo_url = "https://github.com/ipxe/ipxe.git"
 oglive_iso_url = "https://ognproject.evlt.uma.es/trac/downloads/ogLive-focal-5.13.0-27-beta-amd64-r20210706.5b4bf5f.iso"
 SAMBACFGDIR = "/etc/samba"
+TFTPCFGDIR = "/var/lib/tftpboot"
 
 PROGRAM = os.path.splitext(os.path.basename(sys.argv[0]))[0]
 PROGRAM_DIR = os.path.dirname(os.path.realpath(sys.argv[0]))
@@ -28,7 +29,6 @@ OPENGNSYS_CLIENT_PASSWD = config["ogBootSambaPass"]
 IPXE_DIR = "/tmp/ogboot_ipxe"
 
 DEFAULTDEV = ""
-PACKAGES_TO_INSTALL = ["htop"]
 DEVICE = []
 SERVERIP = []
 NETIP = []
@@ -36,7 +36,6 @@ NETMASK = []
 NETBROAD = []
 ROUTERIP = []
 BRANCH = sys.argv[1] if len(sys.argv) > 1 else "main"
-INETDSERV = "xinetd"
 
 UBUNTU_OS_VERSION = "24"
 PYTHON_VERSION = 3
@@ -96,8 +95,8 @@ def check_distribution():
 ###############################################################################
 
 def get_missing_packages():
-	global PACKAGES_TO_INSTALL
-	faltantes = []
+	PACKAGES_TO_INSTALL = []
+
 	OSDISTRIB = distro.name()
 	OSVERSION = distro.version()
 	logger.info(f"OSDISTRIB: {OSDISTRIB}")
@@ -148,31 +147,30 @@ def install_packages(log_packages_file="/tmp/installed_packages.log"):
 	if not missing:
 		logger.info("All packages are already installed.")
 		return
-	
+
 	logger.info("Upgrading the system...")
-	
-	try:
-		subprocess.run(["apt-get", "update"], check=True)
-		subprocess.run(
-			["apt-get", "install", "--allow-change-held-packages", "-y", "--no-install-recommends"] + missing + ['apache2-'],
-			check=True
-		)
-		
-		with open(log_packages_file, "a") as log:
-			for package in missing:
-				logger.info(f"{package} installed correctly.")
-				log.write(package + "\n")
-		
-		logger.info("All missing packages have been installed.")
-		
-		# Check PHP version and install corresponding php-fpm package
-		php_version = subprocess.check_output(["php", "-v"]).decode("utf-8")
-		if "PHP 8.1" in php_version:
-			subprocess.run(["apt-get", "install", "-y", "php8.1-fpm"], check=True)
-		elif "PHP 8.3" in php_version:
-			subprocess.run(["apt-get", "install", "-y", "php8.3-fpm"], check=True)
-		else:
-			logger.warning("PHP version not supported.")
+
+	subprocess.run(["apt-get", "update"], check=True)
+	subprocess.run(
+		["apt-get", "install", "--allow-change-held-packages", "-y", "--no-install-recommends"] + missing + ['apache2-'],
+		check=True
+	)
+
+	with open(log_packages_file, "a") as log:
+		for package in missing:
+			logger.info(f"{package} installed correctly.")
+			log.write(package + "\n")
+
+	logger.info("All missing packages have been installed.")
+
+	# Check PHP version and install corresponding php-fpm package
+	php_version = subprocess.check_output(["php", "-v"]).decode("utf-8")
+	if "PHP 8.1" in php_version:
+		subprocess.run(["apt-get", "install", "-y", "php8.1-fpm"], check=True)
+	elif "PHP 8.3" in php_version:
+		subprocess.run(["apt-get", "install", "-y", "php8.3-fpm"], check=True)
+	else:
+		logger.warning("PHP version not supported.")
 
 def add_sudoers_permissions():
     sudoers_entry = """
@@ -199,7 +197,6 @@ def og_core_create_user(u):
 		logger.info(f"User {u} created successfully.")
 
 def og_boot_create_dirs():
-	global INSTALL_OGBOOT_TARGET
 	if os.path.exists(INSTALL_OGBOOT_TARGET):
 		if not os.path.isdir(INSTALL_OGBOOT_TARGET):
 			raise NotADirectoryError(f"{INSTALL_OGBOOT_TARGET} exists and is not a directory.")
@@ -221,7 +218,6 @@ def og_boot_create_dirs():
 			exit(1)
 
 def og_boot_symfony_install():
-	global INSTALL_OGBOOT_TARGET
 	logger.info("Creating Symfony application skeleton...")
 
 	try:
@@ -368,9 +364,6 @@ def add_user_to_disk_group():
         raise Exception("Error al añadir el usuario 'ogboot' al grupo 'disk'.")
 
 def tftpConfigure():
-	global INETDSERV
-	TFTPCFGDIR = "/var/lib/tftpboot"
-
 	logger.info("Configuring tftpd-hpa...")
 	tftpd_config = """# /etc/default/tftpd-hpa
 
@@ -428,8 +421,6 @@ TFTP_OPTIONS="--secure"
 				os.lchown(symlink_target_ogLive, pwd.getpwnam("tftp").pw_uid, pwd.getpwnam("ogboot").pw_gid)
 				os.lchown(symlink_target_ogclient, pwd.getpwnam("tftp").pw_uid, pwd.getpwnam("ogboot").pw_gid)
 				logger.info(f"Changing properties for {symlink_target_ogLive} and {symlink_target_ogclient}")
-
-				logger.error(f"{symlink_target_ogLive} link does not exists.")
 			else:
 				logger.error(f"{symlink_target_ogLive} link does not exist.")		
 	except subprocess.CalledProcessError as e:
@@ -490,7 +481,6 @@ def tzConfigure():
 			file.write(f"# OpenGnsys Server timezone.\nTZ=\"{TZ}\"\n")
 
 def install_ipxe():
-	global IPXE_DIR, INSTALL_OGBOOT_TARGET
 	clone_dir = "/tmp/ogboot_ipxe"
 
 	if os.path.exists (f"{INSTALL_OGBOOT_TARGET}/tftpboot/undionly.kpxe"):
@@ -555,8 +545,6 @@ def get_ip_address(interface):
         return None
 
 def generate_ipxe_script():
-	global DEFAULTDEV, INSTALL_OGBOOT_TARGET
-
 	ip_address_server = get_ip_address(DEFAULTDEV)
 	template = os.path.join(REPO_DIR, "etc/dhcp_boot.ipxe.tmpl")
 	ipxe_output = f"{INSTALL_OGBOOT_TARGET}/tftpboot/ipxe_scripts/dhcp_boot.ipxe"
@@ -586,7 +574,6 @@ def user_exists(user):
         return False
 
 def smbConfigure():
-	global OPENGNSYS_CLIENT_PASSWD, OPENGNSYS_CLIENT_USER, PYTHON_VERSION
 	backupFile(f"{SAMBACFGDIR}/smb.conf")
 	# Copiar plantilla de recursos para OpenGnsys
 	with open(os.path.join(REPO_DIR, 'etc/smb-ogboot.conf.tmpl'), 'r') as tmpl_file:
@@ -632,7 +619,6 @@ def smbConfigure():
 	return 0
 
 def setup_nginx():
-	global DEFAULTDEV
 	try:
 		# Obtener la IP del servidor
 		ip_address_server = get_ip_address(DEFAULTDEV)