diff --git a/support/functions/_plugin_update_toolchain b/support/functions/_plugin_update_toolchain
index 4b79d4c..1a016c5 100644
--- a/support/functions/_plugin_update_toolchain
+++ b/support/functions/_plugin_update_toolchain
@@ -1,23 +1,61 @@
 #!/bin/bash
 
-#simplebuild_plugin tcupdate 0.1.7
+#simplebuild_plugin tcupdate 0.2.0
 
 tcupdate(){
 	clear;
 	
+	if [ "$1" == "" ];then
+		_fill_tc_array;
+		IFS="#";
+		unset MENU_OPTIONS;COUNT=0
+		if [ "$systype" == "ok" ];then
+			if [ "$tcempty" == "0" ];then
+				for i in "${INST_TCLIST[@]}";do
+					if [ ! "$i" == "native" ];then
+						source "$tccfgdir/$i";
+						MENU_OPTIONS+="$_toolchainname#$_description#";
+						counter;
+					fi;
+				done;
+			fi;
+		fi;
+		out=$(
+		"$gui" "$st_" "$bt_" "$title_" "--cancel-label" "EXIT" "--help-button" "--help-label" "INFO" "--title" "-[ Toolchain $txt_menu ]-" --menu "\nChoose on of the installed toolchains you want to update:\n " "${COUNT+10}" 0 0 ${MENU_OPTIONS});
+		
+		IFS=$OIFS;
+		[ "$out" == "" ] && bye;
+		first=$(echo "$out" | awk '{printf $1}');
+		tc_info=$(echo "$out" | awk '{printf $2}';);
+		case $first in
+			HELP)
+						if [ -f "$tccfgdir/$tc_info" ];then
+							source "$tccfgdir/$tc_info";
+							"$gui" "$st_" "$nc_" "$bt_" "$title_" "--msgbox" "$_tc_info" $((_tc_infolines + 5)) 65;
+						fi;
+						tcupdate;;
+			*)
+						tc="$first";
+						tc_menu="1";
+		esac;
+	else
+		tc="$1"
+		[ "$2" == "" ] && tc_menu="0" || tc_menu="$2";
+	fi;
+	
 	#toolchain native not supported
-	if [ "$1" == "native" ];then
-		echo -e "$r_l  $txt_error:$y_l $1$w_l Toolchain library update not supported!""$rs_";
+	if [ "$tc" == "native" ];then
+		echo -e "$r_l  $txt_error:$y_l $tc$w_l Toolchain library update not supported!""$rs_";
 		_nl;
 		exit;
 	fi;
 	
 	#toolchain exists check
-	[ -f "$tccfgdir/$1" ] && source "$tccfgdir/$1";
-	if [ -d "$tcdir/$1/bin" ];then
-		cd "$tcdir/$1/bin";
+	[ -f "$tccfgdir/$tc" ] && source "$tccfgdir/$tc";
+	if [ -d "$tcdir/$tc/bin" ];then
+		cd "$tcdir/$tc/bin";
 	else
-		echo -e "$r_l  $txt_error:$y_l $1$w_l Toolchain $txt_n_installed""$rs_";
+		echo -e "$r_l  $txt_error:$y_l $tc$w_l Toolchain $txt_n_installed""$rs_";
 		_nl;
 		exit;
 	fi;
@@ -38,11 +76,12 @@ tcupdate(){
 	ranlibname="$_compiler""ranlib";ranlibname=$(realpath $ranlibname);
 	hostname=${_compiler%?};
 	sr=$("$compilername" -print-sysroot 2>/dev/null);
+	sr=$(realpath -sm "$sr");
 	if [ ${#sr} -gt ${#tcdir} ];then
 		[ -d "$sr/include" ] && cd "$sr"
 		[ -d "$sr/usr/include" ] && cd "$sr/usr"
 	else
-		cd "$tcdir/$1/$_sysroot"
+		cd "$tcdir/$tc/$_sysroot"
 	fi;
 	prefixdir="$PWD"
 	pkg=$(find * | grep -m1 "/pkgconfig") && pkgdir="$prefixdir/$pkg";
@@ -73,12 +112,29 @@ tcupdate(){
 		libs+=("(${lib[*]@Q})");
 	done;
 
-	opts=$("$gui" "--item-help" "$st_" "$bt_" "$title_" --title "-[ Library Update for Toolchain $1 ]-" "$cl_" \
+	opts=$("$gui" "--item-help" "--help-tags" "$st_" "$bt_" "$title_" "--help-button" "--help-label" "INFO" "--cancel-label" "$([ "$tc_menu" == "1" ] && echo "BACK" || echo "EXIT")" --title "-[ Library Update for Toolchain $tc ]-" "$cl_"\
 		"\nSelect all libraries to update in toolchain's SYSROOT folder:\n$prefixdir\n\n       library version    NEW                    CURRENT" \
 		"${COUNT+12}" 70 0 "${MENU_OPTIONS[@]}");
 	
-	[ $(echo $opts | tr ' ' '\n' | grep -c "SSL_") -gt 1 ] && echo -e $r_l"\n\nPlease select only one SSL version!"$re_ && sleep 3 && tcupdate $1;
+	#SSL select check
+	[ $(echo $opts | tr ' ' '\n' | grep -c "SSL_") -gt 1 ] && echo -e $r_l"\n\nPlease select only one SSL version!"$re_ && sleep 3 && tcupdate $tc;
 	
+	#HELP section
+	first=$(echo "$opts" | awk '{printf $1}');
+	libkey=$(echo "$opts" | awk '{printf $2}';);
+
+	if [ "$first" == "HELP" ];then
+		sp=$(printf '%*s' 90 | tr ' ' '=')
+		txt=$(cat "$configname" | grep ""$libkey"=\|"$libkey"_");
+		bcd=$(cat "$configname" | grep ""$libkey"_tasks");
+		txt=$(echo -e "Toolchain: $tcdir/$tc\nCompiler:  $compilername\nSysroot:   $sr\nPrefix:    $prefixdir\n$sp\n\nLibrary configuration:\n$txt\n\nBuild command:\n$(_replace_tokens "$(_tidy_tasks "$bcd" "$libkey")")")
+		tempfile=$(mktemp) && echo -e "$txt" > "$tempfile"
+		"$gui" "$st_" "$nc_" "$bt_" "$title_" "--textbox" "$tempfile" 30 80;
+		rm "$tempfile" 2>/dev/null;
+		tcupdate $tc $tc_menu;
+	fi;	
+
+	#BUILD section
 	icount=$(echo $opts | wc -w);i=0;
 	for o in $opts;do
 		unset buildtasks;
@@ -89,13 +145,8 @@ tcupdate(){
 			
 			#generate build command list
 			declare -a libtasks="${lib[7]}";		#populate tasks array element
-			for task in "${libtasks[@]}";do			#replace tokens
-				task=$(echo $task | sed -e "s#@TOOLCHAIN@#$tcdir/$1#g;   \
-											s#@CC@#$compilername#g;      \
-											s#@RANLIB@#$ranlibname#g;    \
-											s#@PREFIX@#$prefixdir#g; \
-											s#@HOST@#$hostname#g"        \
-					   );
+			for task in "${libtasks[@]}";do
+				task=$(_replace_tokens "$task");		#replace tokens
 				buildtasks+=("$task");
 			done
 			
@@ -104,12 +155,13 @@ tcupdate(){
 	done;
 	
 	#Reopen update menu
-	[ ${#opts} -gt 0 ] && tcupdate $1;
+	if [ ${#opts} -gt 0 ];then
+		tcupdate $tc;
+	else
+		[ "$tc_menu" == "1" ] && tcupdate;
+	fi;
 	
-	clear;
-	echo -e "$w_l";
-	s3logo;
-	exit;
+	bye;
 };
 _build(){
 	
@@ -194,6 +246,21 @@ _extract(){
     done
 	exit;
 };
+_replace_tokens(){
+	echo -e "$1" | sed -e "s#@TOOLCHAIN@#$tcdir/$tc#g; \
+						s#@CC@#$compilername#g; \
+						s#@RANLIB@#$ranlibname#g; \
+						s#@PREFIX@#$prefixdir#g; \
+						s#@HOST@#$hostname#g";
+};
+_tidy_tasks(){
+	echo -e "$1" | sed -e "s#$2"_tasks=\(\""##g; \
+						s#$2"_tasks=\(\'"##g; \
+						s#$2"_tasks+=\(\""##g; \
+						s#$2"_tasks+=\(\'"##g; \
+						s#"\"\)\;"##g; \
+						s#"\'\)\;"##g;";
+};
 _get_version(){
 	r="";
 	if [ -f "$1" ];then