diff --git a/AM-INSTALLER b/AM-INSTALLER
index 6585daaf1..6281c0b37 100644
--- a/AM-INSTALLER
+++ b/AM-INSTALLER
@@ -2,31 +2,32 @@
 
 set -e
 
-_away_error() {
-	${1} >/dev/null 2>&1
-}
-
-_away_all() {
-	${1} >/dev/null
-}
-
 # Colors
 RED='\033[0;31m'; LightBlue='\033[1;34m'; Green='\033[0;32m'
 
+# For developers
+AM_BRANCH="main"
+
+# Check dependencies for this script
 _check_dependency() {
-	program="$1"
-	_away_all command -v "$program" || { echo "For Installation to work, install \"$program\" first!" && exit 1; }
+	AMDEPENDENCES="chmod chown curl grep wget"
+	for dependency in $AMDEPENDENCES; do
+		if ! command -v "$dependency" >/dev/null 2>&1; then
+			printf "\n %b💀 ERROR! MISSING ESSENTIAL COMMAND \033[0m: %b\n\n Install the above and try again! \n\n" "${RED}" "$dependency"
+			exit 1
+		fi
+	done
 }
 
-_check_dependency 'wget'
-_check_dependency 'curl'
+_check_dependency
 
 # INSTALL "AM" SYSTEM-WIDE
 _install_am() {
 	CACHEDIR="${XDG_CACHE_HOME:-$HOME/.cache}"
 	mkdir -p "$CACHEDIR" || true
 	rm -f "$CACHEDIR"/INSTALL-AM.sh || true
-	wget -q https://raw.githubusercontent.com/ivan-hc/AM/main/INSTALL -O "$CACHEDIR"/INSTALL-AM.sh && chmod a+x "$CACHEDIR"/INSTALL-AM.sh
+	wget -q "https://raw.githubusercontent.com/ivan-hc/AM/$AM_BRANCH/INSTALL" -O "$CACHEDIR"/INSTALL-AM.sh && chmod a+x "$CACHEDIR"/INSTALL-AM.sh
+	#cp ./INSTALL "$CACHEDIR"/INSTALL-AM.sh && chmod a+x "$CACHEDIR"/INSTALL-AM.sh # for developers
 	if command -v sudo >/dev/null 2>&1; then
 		SUDOCMD="sudo"
 	elif command -v doas >/dev/null 2>&1; then
@@ -58,7 +59,7 @@ _install_appman() {
 			printf '	export PATH="$PATH:$BINDIR"\nfi\n' >> "$ZSHRC"
 		fi
 	fi
-	wget -q https://raw.githubusercontent.com/ivan-hc/AM/main/APP-MANAGER -O "$BINDIR"/appman && chmod a+x "$BINDIR"/appman
+	wget -q "https://raw.githubusercontent.com/ivan-hc/AM/$AM_BRANCH/APP-MANAGER" -O "$BINDIR"/appman && chmod a+x "$BINDIR"/appman
 }
 
 # CHOOSE BETWEEN "AM" AND "APPMAN"
diff --git a/APP-MANAGER b/APP-MANAGER
index e6166d98b..83b4c315a 100755
--- a/APP-MANAGER
+++ b/APP-MANAGER
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-AMVERSION="9.3-2"
+AMVERSION="9.3-3"
 
 # Determine main repository and branch
 AMREPO="https://raw.githubusercontent.com/ivan-hc/AM/main"
@@ -17,8 +17,10 @@ DIR="$( cd "$( dirname "$0" )" && pwd )"
 CLI=$(basename "$0")
 
 # Determine system architecture and current user
-arch="$HOSTTYPE"
-export ARCH="$arch"
+ARCH="$(uname -m)"
+[ "$ARCH" = "amd64" ] && ARCH=x86_64
+arch="$ARCH"
+export ARCH arch
 
 # XDG Variables
 export BINDIR="${XDG_BIN_HOME:-$HOME/.local/bin}"
@@ -39,7 +41,10 @@ LightBlue='\033[1;34m'
 DIVIDING_LINE="-----------------------------------------------------------------------------"
 
 # Prevent the use of "sudo" ("AM")
-[ -n "$SUDO_COMMAND" ] && echo -e "\n Please do not use \"sudo\" to execute \"$CLI\", try again.\n" && exit 1
+if [ -n "${SUDO_USER:-$DOAS_USER}" ]; then
+	printf "\n Please do not use \"sudo\" to execute \"$CLI\", try again.\n\n"
+	exit 1
+fi
 
 function _create_cache_dir() {
 	AMCACHEDIR="$CACHEDIR/$AMCLI"
@@ -255,13 +260,14 @@ function _am_dependences_check() {
 }
 
 function _check_ubuntu_mess() {
-	if ! unshare --user -p /bin/true >/dev/null 2>&1; then
+	if command -v unshare >/dev/null 2>&1 && ! unshare --user -p /bin/true >/dev/null 2>&1; then
 		echo "$DIVIDING_LINE"
 		echo ""
 		echo -e " ${RED}⚠️ WARNING: ACCESS TO USER NAMESPACES IS RESTRICTED! \033[0m"
 		echo ""
-		echo " Some apps may not run, you need to enable access to user namespaces,"
-		echo -e " please visit ${LightBlue}https://github.com/ivan-hc/AM#ubuntu-mess\033[0m to know more."
+		echo " Some apps may not run, you need to enable access to user namespaces, see"
+		echo -e " ${LightBlue}https://github.com/ivan-hc/AM/blob/main/docs/troubleshooting.md#ubuntu-mess\033[0m"
+		echo " to know more."
 		echo ""
 		echo "$DIVIDING_LINE"
 	fi
diff --git a/INSTALL b/INSTALL
index 381ed1962..dff8db55b 100755
--- a/INSTALL
+++ b/INSTALL
@@ -1,27 +1,28 @@
 #!/bin/sh
 
-_away_error() {
-	${1} >/dev/null 2>&1
-}
-
-_away_all() {
-	${1} >/dev/null
-}
+# Colors
+RED='\033[0;31m'; LightBlue='\033[1;34m'; Green='\033[0;32m'
 
-# DETERMINE SYSTEM ARCHITECTURE AND CURRENT USER
-arch=$(uname -m)
-currentuser=$(who | awk '{print $1}')
+# For developers
+AM_BRANCH="main"
 
+# Check dependencies for this script
 _check_dependency() {
-    program="$1"
-    _away_all command -v "$program" && return 0 || printf "${RED}WARNING: For Installation to work, install \"$program\" first!\033[0m\n" && exit 1
+	AMDEPENDENCES="chmod chown curl grep wget"
+	for dependency in $AMDEPENDENCES; do
+		if ! command -v "$dependency" >/dev/null 2>&1; then
+			printf "\n %b💀 ERROR! MISSING ESSENTIAL COMMAND \033[0m: %b\n\n Install the above and try again! \n\n" "${RED}" "$dependency"
+			exit 1
+		fi
+	done
 }
 
-_check_dependency 'wget'
-_check_dependency 'curl'
+_check_dependency
 
-# Colors
-RED='\033[0;31m'; LightBlue='\033[1;34m'; Green='\033[0;32m'
+if [ -z "${SUDO_USER:-$DOAS_USER}" ]; then
+	echo 'Please use sudo or doas'
+	exit 1
+fi
 
 # INSTALL "AM"
 _prepare_am_directory() {
@@ -36,7 +37,7 @@ _prepare_am_directory() {
 	chmod a+x /opt/am/remove || exit 1
 
 	# DOWNLOAD AND LINK THE MAIN SCRIPT
-	wget -q https://raw.githubusercontent.com/ivan-hc/AM/main/APP-MANAGER
+	wget -q "https://raw.githubusercontent.com/ivan-hc/AM/$AM_BRANCH/APP-MANAGER"
 	chmod a+x /opt/am/APP-MANAGER
 	ln -s /opt/am/APP-MANAGER /usr/local/bin/am 2> /dev/null || printf "${RED}WARNING: Couldn't link am to \"/usr/local/bin/am\"!\033[0m\n"
 }
@@ -44,18 +45,18 @@ _prepare_am_directory() {
 _download_am_modules() {
 	# DOWNLOAD MODULES
 	cd /opt/am/modules || exit
-	MODULES=$(curl -Ls https://raw.githubusercontent.com/ivan-hc/AM/main/APP-MANAGER | tr '"' '\n' | grep "[a-z]\.am$")
+	MODULES=$(curl -Ls "https://raw.githubusercontent.com/ivan-hc/AM/$AM_BRANCH/APP-MANAGER" | tr '"' '\n' | grep "[a-z]\.am$")
 	for module_name in $MODULES; do
-		if ! test -f ./"$module_name"; then
+		if [ ! -f ./"$module_name" ]; then
 			echo " ◆ Downloading $module_name..."
-			wget -q "https://raw.githubusercontent.com/ivan-hc/AM/main/modules/$module_name"
+			wget -q "https://raw.githubusercontent.com/ivan-hc/AM/$AM_BRANCH/modules/$module_name"
 			chmod a+x ./"$module_name"
 		fi
 	done
 	cd ..
 
 	# ENABLE NON-ROOT PERMISSIONS TO THE MAIN DIRECTORY FOR THE CURRENT USER
-	chown -R $currentuser /opt/am 2> /dev/null
+	chown -R "${SUDO_USER:-$DOAS_USER}" /opt/am 2>/dev/null
 }
 
 echo '--------------------------------------------------------------------------'