diff --git a/UPGRADE.ubuntu2404_modcsirt.sh b/UPGRADE.ubuntu2404_modcsirt.sh
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+#!/bin/bash
+# MISP 2.5 upgrade for MISP 2.4 installations on Ubuntu 24.04 LTS
+
+# For other Ubuntu versions, make sure that you first dist-upgrade to 24.04. 
+
+# This guide liberally borrows from three sources:
+# - The previous iterations of the official MISP installation guide, which can be found at: https://misp.github.io/MISP
+# - The automisp install guide by @da667, which can be found at: https://github.com/da667/AutoMISP/blob/master/auto-MISP-ubuntu.sh
+# - MISP-docker by @ostefano, which can be found at: https://github.com/MISP/MISP-docker
+# Thanks to both Tony Robinson (@da667), Stefano Ortolani (@ostefano) and Steve Clement (@SteveClement) for their awesome work!
+
+# This installation script assumes that you are installing as root, or a user with sudo access.
+
+random_string() {
+    cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1
+}
+
+# Configure the following variables in advance for your environment
+## required settings - please change all of these, failing to do so will result in a non-working installation or a highly insecure installation
+MISP_PATH='/var/www/MISP'
+APACHE_USER='www-data'
+
+### Supervisor settings
+SWITCH_TO_SUPERVISOR=true
+SUPERVISOR_USER='supervisor'
+SUPERVISOR_PASSWORD="$(random_string)"
+INSTALL_SSDEEP=false
+
+### PHP settings
+upload_max_filesize="50M"
+post_max_size="50M"
+max_execution_time="300"
+memory_limit="2048M"
+
+# Some helper functions shamelessly copied from @da667's automisp install script.
+
+logfile=/var/log/misp_upgrade.log
+mkfifo ${logfile}.pipe
+tee < ${logfile}.pipe $logfile &
+exec &> ${logfile}.pipe
+rm ${logfile}.pipe
+
+function install_packages()
+{
+    install_params=("$@")
+    for i in "${install_params[@]}";
+    do
+        sudo apt-get install -y "$i" &>> $logfile
+        error_check "$i installation"
+    done
+}
+
+
+function error_check
+{
+    if [ $? -eq 0 ]; then
+        print_ok "$1 successfully completed."
+    else
+        print_error "$1 failed. Please check $logfile for more details."
+    exit 1
+    fi
+}
+
+
+function error_check_soft
+{
+    if [ $? -eq 0 ]; then
+        print_ok "$1 successfully completed."
+    else
+        print_error "$1 failed. Please check $logfile for more details. This is not a blocking failure though, proceeding..."
+    fi
+}
+
+function print_status ()
+{
+    echo -e "\x1B[01;34m[STATUS]\x1B[0m $1"
+}
+
+function print_ok ()
+{
+    echo -e "\x1B[01;32m[OK]\x1B[0m $1"
+}
+
+function print_error ()
+{
+    echo -e "\x1B[01;31m[ERROR]\x1B[0m $1"
+}
+
+function os_version_check ()
+{
+    # Check if we're on Ubuntu 24.04 as expected:
+    UBUNTU_VERSION=$(lsb_release -a | grep Release | grep -oP '[\d-]+.[\d-]+$')
+    if [[ "$UBUNTU_VERSION" != "24.04" ]]; then
+        print_error "This upgrade tool expects you to be running Ubuntu 24.04. If you are on a prior upgrade of Ubuntu, please make sure that you upgrade your distribution first, then execute this script again."
+        exit 1
+    fi
+}
+
+function print_notification ()
+{
+	echo -e "\x1B[01;33m[NOTICE]\x1B[0m $1"
+}
+
+BLUE="\033[1;34m"
+NC="\033[0m"
+echo -e "${BLUE}███╗   ███╗${NC}██╗███████╗██████╗ "
+echo -e "${BLUE}████╗ ████║${NC}██║██╔════╝██╔══██╗"
+echo -e "${BLUE}██╔████╔██║${NC}██║███████╗██████╔╝"
+echo -e "${BLUE}██║╚██╔╝██║${NC}██║╚════██║██╔═══╝ "
+echo -e "${BLUE}██║ ╚═╝ ██║${NC}██║███████║██║     "
+echo -e "${BLUE}╚═╝     ╚═╝${NC}╚═╝╚══════╝╚═╝     "
+echo -e "v2.5 Upgrade on Ubuntu 24.04 LTS"
+
+os_version_check
+
+save_settings() {
+    echo "[$(date)] MISP installation
+
+[MISP internal]
+- SUPERVISOR_USER: ${SUPERVISOR_USER}
+- SUPERVISOR_PASSWORD: ${SUPERVISOR_PASSWORD}
+" | tee /var/log/misp_upgrade_settings.txt  &>> $logfile
+
+    print_notification "Settings saved to /var/log/misp_upgrade_settings.txt"
+}
+
+print_status "Updating base system..."
+sudo apt-get update &>> $logfile
+sudo apt-get upgrade -y &>> $logfile
+error_check "Base system update"
+
+print_status "Checking if we're on the correct branch of MISP and updating it to the latest 2.4 release..."
+sudo chown -R ${APACHE_USER}:${APACHE_USER} ${MISP_PATH}
+sudo chown -R ${APACHE_USER}:${APACHE_USER} ${MISP_PATH}/.git
+cd ${MISP_PATH}
+git config --global --add safe.directory ${MISP_PATH}
+CURRENT_MISP_BRANCH=$(sudo -u ${APACHE_USER} git rev-parse --abbrev-ref HEAD)
+if [ $CURRENT_MISP_BRANCH != "2.4" ]; then
+    print_error "You are not on the 2.4 branch of MISP. This upgrade script is meant to take your MISP 2.4 installation to 2.5+. Please switch to the 2.4 branch before running this script."
+    # exit 1
+fi
+sudo -u ${APACHE_USER} git pull origin 2.4 &>> $logfile
+error_check "Updating MISP to the latest 2.4 release"
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin runUpdates &>> $logfile
+error_check_soft "Updating MISP's database to the latest 2.4 release's schema"
+
+print_status "Installing apt packages (supervisor jq python3 python3-pip python3-virtualenv)..."
+declare -a packages=( supervisor jq python3 python3-pip python3-virtualenv );
+install_packages ${packages[@]}
+error_check "Basic dependencies installation"
+
+print_status "Installing PHP and the list of required extensions..."
+declare -a packages=( php8.3 php8.3-cli php8.3-dev php8.3-xml php8.3-mysql php8.3-opcache php8.3-readline php8.3-mbstring php8.3-zip \
+  php8.3-intl php8.3-bcmath php8.3-gd php8.3-redis php8.3-gnupg php8.3-apcu libapache2-mod-php8.3 php8.3-curl );
+install_packages ${packages[@]}
+PHP_ETC_BASE=/etc/php/8.3
+PHP_INI=${PHP_ETC_BASE}/apache2/php.ini
+error_check "PHP and required extensions installation."
+
+print_status "Disabling/Enabling php apache module (trial and error like a monkey)..."
+sudo a2dismod php7.0 &>> $logfile
+sudo a2dismod php7.1 &>> $logfile
+sudo a2dismod php7.2 &>> $logfile
+sudo a2dismod php7.3 &>> $logfile
+sudo a2dismod php7.4 &>> $logfile
+sudo a2enmod php8.3 &>> $logfile
+error_check "PHP 8.3 module enabling"
+
+# Install composer and the composer dependencies of MISP
+
+print_status "Installing composer..."
+
+## make pip and composer happy
+sudo mkdir /var/www/.cache/ &>> $logfile
+sudo chown -R ${APACHE_USER}:${APACHE_USER} /var/www/.cache/ &>> $logfile
+
+curl -sS https://getcomposer.org/installer -o /tmp/composer-setup.php &>> $logfile
+COMPOSER_HASH=`curl -sS https://composer.github.io/installer.sig`
+php -r "if (hash_file('SHA384', '/tmp/composer-setup.php') === '$HASH') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"  &>> $logfile
+sudo php /tmp/composer-setup.php --install-dir=/usr/local/bin --filename=composer  &>> $logfile
+error_check "Composer installation"
+
+print_status "Configuring PHP settings..."
+
+for key in upload_max_filesize post_max_size max_execution_time max_input_time memory_limit
+do
+    sudo sed -i "s/^\($key\).*/\1 = $(eval echo \${$key})/" $PHP_INI
+done
+sudo sed -i "s/^\(session.sid_length\).*/\1 = 32/" $PHP_INI
+sudo sed -i "s/^\(session.use_strict_mode\).*/\1 = 1/" $PHP_INI
+sudo sed -i "s/^\(session.save_handler\).*/\1 = redis/" $PHP_INI
+sudo sed -i "/session.save_handler/a session.save_path = 'tcp:\/\/localhost:6379'/" $PHP_INI
+
+sudo service apache2 restart
+error_check "Apache restart"
+print_ok "PHP8.3 configured..."
+
+print_status "Installing PECL extensions..."
+
+sudo pecl channel-update pecl.php.net &>> $logfile
+sudo pecl install brotli &>> $logfile
+error_check "PECL brotli extension installation"
+sudo pecl install simdjson &>> $logfile
+error_check "PECL simdjson extension installation"
+sudo pecl install zstd &>> $logfile
+error_check "PECL zstd extension installation"
+
+if [ $INSTALL_SSDEEP ]; then
+    sudo apt install make -y &>> $logfile
+    error_check "The installation of make"
+    git clone --recursive --depth=1 https://github.com/JakubOnderka/pecl-text-ssdeep.git /tmp/pecl-text-ssdeep
+    error_check "Jakub Onderka's PHP8 SSDEEP extension cloning"
+    cd /tmp/pecl-text-ssdeep && phpize && ./configure && make && make install
+    error_check "Jakub Onderka's PHP8 SSDEEP extension compilation and installation"
+fi
+
+
+print_status "Switching to the 2.5 branch"
+cd ${MISP_PATH}
+git fetch origin 2.5 &>> $logfile
+error_check "Fetching 2.5 branch"
+git checkout 2.5 &>> $logfile
+error_check "Checking out 2.5 branch"
+
+print_status "Cloning MISP submodules..."
+sudo git config --global --add safe.directory ${MISP_PATH}  &>> $logfile
+sudo git -C ${MISP_PATH} submodule update --init --recursive &>> $logfile
+error_check "MISP submodules cloning"
+sudo git -C ${MISP_PATH} submodule foreach --recursive git config core.filemode false &>> $logfile
+sudo chown -R ${APACHE_USER}:${APACHE_USER} ${MISP_PATH} &>> $logfile
+sudo chown -R ${APACHE_USER}:${APACHE_USER} ${MISP_PATH}/.git &>> $logfile
+print_ok "MISP's submodules cloned."
+
+print_status "Installing MISP composer dependencies..."
+cd ${MISP_PATH}/app
+sudo -u ${APACHE_USER} rm -f composer.lock
+sudo -u ${APACHE_USER} composer install --no-dev --no-interaction --prefer-dist &>> $logfile
+error_check "MISP composer dependencies installation"
+
+print_status "Reworking the MISP database.php file"
+
+cd ${MISP_PATH}/app/Config
+sudo -u ${APACHE_USER} cp -a database.php database.php.bk &>> $logfile
+sudo -u ${APACHE_USER} cp -a database.default.php database.php &>> $logfile
+
+declare -a dbsettings=("datasource" "persistent" "host" "login" "port" "password" "database" "prefix" "encoding")
+for i in "${dbsettings[@]}"
+do
+   # Hacky AF. I have brought great shame on my family.
+   TEMPVALUE=$(cat "${MISP_PATH}/app/Config/database.php.bk" | grep "'$i' => " | grep -v "//'" | grep -v '*')
+   sed -i "/'$i' =>/c ${TEMPVALUE}" database.php &>> $logfile
+done
+
+print_ok "MISP database.php file rewritten."
+
+print_status "Running MISP updates"
+
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin runUpdates &>> $logfile
+error_check "MISP schema updates"
+
+
+print_status "Setting up Python environment for MISP (Re-create)"
+
+# Remove previously venv
+if [ -d "${MISP_PATH}/venv" ]; then
+    rm -rf ${MISP_PATH}/venv
+fi
+
+# Create a python3 virtualenv again
+sudo -u ${APACHE_USER} virtualenv -p python3 ${MISP_PATH}/venv &>> $logfile
+error_check "Python virtualenv creation"
+
+cd ${MISP_PATH}
+. ./venv/bin/activate &>> $logfile
+error_check "Python virtualenv activation"
+
+# install python dependencies
+${MISP_PATH}/venv/bin/pip install -r ${MISP_PATH}/requirements.txt  &>> $logfile
+error_check "Python dependencies installation"
+
+chown -R ${APACHE_USER}:${APACHE_USER} ${MISP_PATH}/venv
+
+
+
+print_status "Setting up background workers"
+
+SUPERVISOR_ALREADY_ENABLED=$(${MISP_PATH}/app/Console/cake Admin getSetting SimpleBackgroundJobs.enabled | jq -r '.value')
+
+if [ $SWITCH_TO_SUPERVISOR ] && [ $SUPERVISOR_ALREADY_ENABLED != true ]; then
+
+sudo echo "
+[inet_http_server]
+port=127.0.0.1:9001
+username=$SUPERVISOR_USER
+password=$SUPERVISOR_PASSWORD" | sudo tee -a /etc/supervisor/supervisord.conf  &>> $logfile
+
+sudo echo "[group:misp-workers]
+programs=default,email,cache,prio,update
+
+[program:default]
+directory=$MISP_PATH
+command=$MISP_PATH/app/Console/cake start_worker default
+process_name=%(program_name)s_%(process_num)02d
+numprocs=5
+autostart=true
+autorestart=true
+redirect_stderr=false
+stderr_logfile=$MISP_PATH/app/tmp/logs/misp-workers-errors.log
+stdout_logfile=$MISP_PATH/app/tmp/logs/misp-workers.log
+directory=$MISP_PATH
+user=$APACHE_USER
+
+[program:prio]
+directory=$MISP_PATH
+command=$MISP_PATH/app/Console/cake start_worker prio
+process_name=%(program_name)s_%(process_num)02d
+numprocs=5
+autostart=true
+autorestart=true
+redirect_stderr=false
+stderr_logfile=$MISP_PATH/app/tmp/logs/misp-workers-errors.log
+stdout_logfile=$MISP_PATH/app/tmp/logs/misp-workers.log
+directory=$MISP_PATH
+user=$APACHE_USER
+
+[program:email]
+directory=$MISP_PATH
+command=$MISP_PATH/app/Console/cake start_worker email
+process_name=%(program_name)s_%(process_num)02d
+numprocs=5
+autostart=true
+autorestart=true
+redirect_stderr=false
+stderr_logfile=$MISP_PATH/app/tmp/logs/misp-workers-errors.log
+stdout_logfile=$MISP_PATH/app/tmp/logs/misp-workers.log
+directory=$MISP_PATH
+user=$APACHE_USER
+
+[program:update]
+directory=$MISP_PATH
+command=$MISP_PATH/app/Console/cake start_worker update
+process_name=%(program_name)s_%(process_num)02d
+numprocs=1
+autostart=true
+autorestart=true
+redirect_stderr=false
+stderr_logfile=$MISP_PATH/app/tmp/logs/misp-workers-errors.log
+stdout_logfile=$MISP_PATH/app/tmp/logs/misp-workers.log
+directory=$MISP_PATH
+user=$APACHE_USER
+
+[program:cache]
+directory=$MISP_PATH
+command=$MISP_PATH/app/Console/cake start_worker cache
+process_name=%(program_name)s_%(process_num)02d
+numprocs=5
+autostart=true
+autorestart=true
+redirect_stderr=false
+stderr_logfile=$MISP_PATH/app/tmp/logs/misp-workers-errors.log
+stdout_logfile=$MISP_PATH/app/tmp/logs/misp-workers.log
+user=$APACHE_USER"  | sudo tee -a /etc/supervisor/conf.d/misp-workers.conf  &>> $logfile
+
+sudo systemctl restart supervisor  &>> $logfile
+
+# Configure background workers
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.enabled" 1 &>> $logfile
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.redis_host" '127.0.0.1' &>> $logfile
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.redis_port" 6379 &>> $logfile
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.redis_database" 13 &>> $logfile
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.redis_password" "" &>> $logfile
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.redis_namespace" "background_jobs" &>> $logfile
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.supervisor_host" "localhost" &>> $logfile
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.supervisor_port" 9001 &>> $logfile
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.supervisor_user" ${SUPERVISOR_USER} &>> $logfile
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin setSetting "SimpleBackgroundJobs.supervisor_password" ${SUPERVISOR_PASSWORD} &>> $logfile
+
+
+error_check "Background workers setup"
+
+fi
+
+print_status "Ingesting JSON structures"
+sudo -u ${APACHE_USER} ${MISP_PATH}/app/Console/cake Admin updateJSON &>> $logfile
+error_check "JSON structures ingestion"
+
+# Restart apache
+sudo systemctl restart apache2 &>> $logfile
+error_check "Apache restart"
+
+
+print_status "Finalising MISP setup..."
+sudo chown -R ${APACHE_USER}:${APACHE_USER} ${MISP_PATH} &>> $logfile
+sudo chown -R ${APACHE_USER}:${APACHE_USER} ${MISP_PATH}/.git &>> $logfile
+
+save_settings
+
+print_notification "MISP setup complete. Thank you, and have a very safe, and productive day."
\ No newline at end of file