diff --git a/lgsm/functions/update_steamcmd.sh b/lgsm/functions/update_steamcmd.sh
new file mode 100644
index 000000000..6beee4fad
--- /dev/null
+++ b/lgsm/functions/update_steamcmd.sh
@@ -0,0 +1,252 @@
+#!/bin/bash
+# LinuxGSM update_steamcmd.sh function
+# Author: Daniel Gibbs
+# Website: https://linuxgsm.com
+# Description: Handles updating using SteamCMD.
+
+functionselfname="$(basename "$(readlink -f "${BASH_SOURCE[0]}")")"
+
+fn_update_steamcmd_dl(){
+	info_config.sh
+	# Detects if unbuffer command is available for 32 bit distributions only.
+	info_distro.sh
+	if [ "$(command -v stdbuf)" ]&&[ "${arch}" != "x86_64" ]; then
+		unbuffer="stdbuf -i0 -o0 -e0"
+	fi
+	if [ -d "${steamcmddir}" ]; then
+		cd "${steamcmddir}" || exit
+	fi
+
+	# If GoldSrc (appid 90) servers. GoldSrc (appid 90) require extra commands.
+	if [ "${appid}" == "90" ]; then
+		# If using a specific branch.
+		if [ -n "${branch}" ]; then
+			${unbuffer} ${steamcmdcommand} +login "${steamuser}" "${steampass}" +force_install_dir "${serverfiles}" +app_set_config 90 mod "${appidmod}" +app_update "${appid}" -beta "${branch}" +quit | tee -a "${lgsmlog}"
+		else
+			${unbuffer} ${steamcmdcommand} +login "${steamuser}" "${steampass}" +force_install_dir "${serverfiles}" +app_set_config 90 mod "${appidmod}" +app_update "${appid}" +quit | tee -a "${lgsmlog}"
+		fi
+	elif [ "${shortname}" == "ac" ]; then
+		${unbuffer} ${steamcmdcommand} +@sSteamCmdForcePlatformType windows +login "${steamuser}" "${steampass}" +force_install_dir "${serverfiles}" +app_update "${appid}" +quit
+	# All other servers.
+	else
+		if [ -n "${branch}" ]; then
+			if [ -n "${branchpassword}" ]; then
+				${unbuffer} ${steamcmdcommand} +login "${steamuser}" "${steampass}" +force_install_dir "${serverfiles}" +app_update "${appid}" -beta "${branch}" -betapassword "${branchpassword}" +quit | tee -a "${lgsmlog}"
+			else
+				${unbuffer} ${steamcmdcommand} +login "${steamuser}" "${steampass}" +force_install_dir "${serverfiles}" +app_update "${appid}" -beta "${branch}" +quit | tee -a "${lgsmlog}"
+			fi
+		else
+			${unbuffer} ${steamcmdcommand} +login "${steamuser}" "${steampass}" +force_install_dir "${serverfiles}" +app_update "${appid}" +quit | tee -a "${lgsmlog}"
+		fi
+	fi
+	fix.sh
+}
+
+fn_update_steamcmd_localbuild(){
+	# Gets local build info.
+	fn_print_dots "Checking local build: ${remotelocation}"
+	fn_appmanifest_check
+	# Uses appmanifest to find local build.
+	localbuild=$(grep buildid "${appmanifestfile}" | tr '[:blank:]"' ' ' | tr -s ' ' | cut -d\  -f3)
+
+	# Set branch for updateinfo.
+	IFS=' ' read -ra branchsplits <<< "${branch}"
+	if [ "${#branchsplits[@]}" -gt 1 ]; then
+		branchname="${branchsplits[1]}"
+	else
+		branchname="public"
+	fi
+
+	# Checks if localbuild variable has been set.
+	if [ -z "${localbuild}" ]||[ "${localbuild}" == "null" ]; then
+		fn_print_fail "Checking local build: ${remotelocation}"
+		fn_script_log_fatal "Checking local build"
+		core_exit.sh
+	else
+		fn_print_ok "Checking local build: ${remotelocation}"
+		fn_script_log_pass "Checking local build"
+	fi
+}
+
+fn_update_steamcmd_remotebuild(){
+	# Gets remote build info.
+	if [ -d "${steamcmddir}" ]; then
+		cd "${steamcmddir}" || exit
+	fi
+
+	# Removes appinfo.vdf as a fix for not always getting up to date version info from SteamCMD.
+	if [ "$(find "${HOME}" -type f -name "appinfo.vdf" | wc -l)" -ne "0" ]; then
+		find "${HOME}" -type f -name "appinfo.vdf" -exec rm -f {} \;
+	fi
+
+	remotebuild=$(${steamcmdcommand} +login "${steamuser}" "${steampass}" +app_info_update 1 +app_info_print "${appid}" +quit | sed '1,/branches/d' | sed "1,/${branchname}/d" | grep -m 1 buildid | tr -cd '[:digit:]')
+	if [ "${installer}" != "1" ]; then
+		fn_print_dots "Checking remote build: ${remotelocation}"
+		# Checks if remotebuild variable has been set.
+		if [ -z "${remotebuild}" ]||[ "${remotebuild}" == "null" ]; then
+			fn_print_fail "Checking remote build: ${remotelocation}"
+			fn_script_log_fatal "Checking remote build"
+			core_exit.sh
+		else
+			fn_print_ok "Checking remote build: ${remotelocation}"
+			fn_script_log_pass "Checking remote build"
+		fi
+	else
+		# Checks if remotebuild variable has been set.
+		if [ -z "${remotebuild}" ]||[ "${remotebuild}" == "null" ]; then
+			fn_print_failure "Unable to get remote build"
+			fn_script_log_fatal "Unable to get remote build"
+			core_exit.sh
+		fi
+	fi
+}
+
+fn_update_steamcmd_compare(){
+	fn_print_dots "Checking for update: ${remotelocation}"
+	if [ "${localbuild}" != "${remotebuild}" ]; then
+		fn_print_ok_nl "Checking for update: ${remotelocation}"
+		echo -en "\n"
+		echo -e "Update available"
+		echo -e "* Local build: ${red}${localbuild}${default}"
+		echo -e "* Remote build: ${green}${remotebuild}${default}"
+		if [ -v "${branch}" ]; then
+			echo -e "* Branch: ${branch}"
+		fi
+		echo -e "https://steamdb.info/app/${appid}/"
+		echo -en "\n"
+		fn_script_log_info "Update available"
+		fn_script_log_info "Local build: ${localbuild}"
+		fn_script_log_info "Remote build: ${remotebuild}"
+		if [ -v "${branch}" ]; then
+			fn_script_log_info "Branch: ${branch}"
+		fi
+		fn_script_log_info "${localbuild} > ${remotebuild}"
+
+		unset updateonstart
+		check_status.sh
+		# If server stopped.
+		if [ "${status}" == "0" ]; then
+			fn_update_steamcmd_dl
+		# If server started.
+		else
+			fn_stop_warning
+			exitbypass=1
+			command_stop.sh
+			exitbypass=1
+			fn_update_steamcmd_dl
+			exitbypass=1
+			command_start.sh
+		fi
+		date +%s > "${lockdir}/lastupdate.lock"
+		alert="update"
+		alert.sh
+	else
+		fn_print_ok_nl "Checking for update: ${remotelocation}"
+		echo -en "\n"
+		echo -e "No update available"
+		echo -e "* Local build: ${green}${localbuild}${default}"
+		echo -e "* Remote build: ${green}${remotebuild}${default}"
+		if [ -v "${branch}" ]; then
+			echo -e "* Branch: ${branch}"
+		fi
+		echo -e "https://steamdb.info/app/${appid}/"
+		echo -en "\n"
+		fn_script_log_info "No update available"
+		fn_script_log_info "Local build: ${localbuild}"
+		fn_script_log_info "Remote build: ${remotebuild}"
+		if [ -v "${branch}" ]; then
+			fn_script_log_info "Branch: ${branch}"
+		fi
+	fi
+}
+
+fn_appmanifest_info(){
+	appmanifestfile=$(find "${serverfiles}" -type f -name "appmanifest_${appid}.acf")
+	appmanifestfilewc=$(find "${serverfiles}" -type f -name "appmanifest_${appid}.acf" | wc -l)
+}
+
+fn_appmanifest_check(){
+	fn_appmanifest_info
+	# Multiple or no matching appmanifest files may sometimes be present.
+	# This error is corrected if required.
+	if [ "${appmanifestfilewc}" -ge "2" ]; then
+		fn_print_error "Multiple appmanifest_${appid}.acf files found"
+		fn_script_log_error "Multiple appmanifest_${appid}.acf files found"
+		fn_print_dots "Removing x${appmanifestfilewc} appmanifest_${appid}.acf files"
+		for appfile in ${appmanifestfile}; do
+			rm -f "${appfile:?}"
+		done
+		appmanifestfilewc1="${appmanifestfilewc}"
+		fn_appmanifest_info
+		# if error can not be resolved.
+		if [ "${appmanifestfilewc}" -ge "2" ]; then
+			fn_print_fail "Unable to remove x${appmanifestfilewc} appmanifest_${appid}.acf files"
+			fn_script_log_fatal "Unable to remove x${appmanifestfilewc} appmanifest_${appid}.acf files"
+			echo -e "* Check user permissions"
+			for appfile in ${appmanifestfile}; do
+				echo -e "	${appfile}"
+			done
+			core_exit.sh
+		else
+			fn_print_ok "Removed x${appmanifestfilewc1} appmanifest_${appid}.acf files"
+			fn_script_log_pass "Removed x${appmanifestfilewc1} appmanifest_${appid}.acf files"
+			fn_print_info_nl "Forcing update to correct issue"
+			fn_script_log_info "Forcing update to correct issue"
+			fn_update_steamcmd_dl
+		fi
+	elif [ "${appmanifestfilewc}" -eq "0" ]; then
+		fn_print_error_nl "No appmanifest_${appid}.acf found"
+		fn_script_log_error "No appmanifest_${appid}.acf found"
+		fn_print_info_nl "Forcing update to correct issue"
+		fn_script_log_info "Forcing update to correct issue"
+		fn_update_steamcmd_dl
+		fn_appmanifest_info
+		if [ "${appmanifestfilewc}" -eq "0" ]; then
+			fn_print_fail_nl "Still no appmanifest_${appid}.acf found"
+			fn_script_log_fatal "Still no appmanifest_${appid}.acf found"
+			core_exit.sh
+		fi
+	fi
+}
+
+fn_stop_warning(){
+	fn_print_warn "Updating server: SteamCMD: ${selfname} will be stopped during update"
+	fn_script_log_warn "Updating server: SteamCMD: ${selfname} will be stopped during update"
+	totalseconds=3
+	for seconds in {3..1}; do
+		fn_print_warn "Updating server: SteamCMD: ${selfname} will be stopped during update: ${totalseconds}"
+		totalseconds=$((totalseconds - 1))
+		sleep 1
+		if [ "${seconds}" == "0" ]; then
+			break
+		fi
+	done
+	fn_print_warn_nl "Updating server: SteamCMD: ${selfname} will be stopped during update"
+}
+
+# The location where the builds are checked and downloaded.
+remotelocation="SteamCMD"
+check_steamcmd.sh
+
+if [ "${forceupdate}" == "1" ]; then
+	# forceupdate bypasses update checks.
+	check_status.sh
+	if [ "${status}" != "0" ]; then
+		fn_stop_warning
+		exitbypass=1
+		command_stop.sh
+		fn_update_steamcmd_dl
+		date +%s > "${lockdir}/lastupdate.lock"
+		exitbypass=1
+		command_start.sh
+	else
+		fn_update_steamcmd_dl
+		date +%s > "${lockdir}/lastupdate.lock"
+	fi
+else
+	fn_print_dots "Checking for update"
+	fn_print_dots "Checking for update: ${remotelocation}"
+	fn_update_steamcmd_localbuild
+	fn_update_steamcmd_remotebuild
+	fn_update_steamcmd_compare
+fi