diff --git a/buildroot b/buildroot
index 3f42ebb39..8cf4f17c2 160000
--- a/buildroot
+++ b/buildroot
@@ -1 +1 @@
-Subproject commit 3f42ebb39708531f493e962a81499aaecb64e97c
+Subproject commit 8cf4f17c2a4eeeb0250c90e993de77dd2fad15ea
diff --git a/package/prudynt-t/files/prudyntcfg.awk b/package/prudynt-t/files/prudyntcfg.awk
index d50d10144..341b1e68c 100644
--- a/package/prudynt-t/files/prudyntcfg.awk
+++ b/package/prudynt-t/files/prudyntcfg.awk
@@ -1,126 +1,152 @@
 #!/usr/bin/awk -f
-# write line if y is set, it's commented out
-function w(y){
-    for(i=0;i<d;i++){u=u"\t"};
+##############################################
+# functions always start with _
+#
+# flag o: 
+#   1 = key / value mode
+#   2 = array open
+#   4 = question marks open
+#   8 = comment after value
+#   64 = error
+#   128 = write
+#   256 = finish
+##############################################
+function _s(q){
+    o=or(o,q);
+}
+function _u(q){
+    if(and(o,q)){o=xor(o,q)};
+}
+function _q(q){
+    return and(o,q)!=0;
+}
+function _i(q){
+    u="";
+    for(i=0;i<q;i++){u=u"\t"}
+    return u;
+}
+function _e(q){
+    if(g){g=g"\n"}
+    g=g""q;
+}
+function _w(y){
+    # if y is set we uncomment the line else we create a new one
+    u=_i(d);
     if(y){
         u=u"# "t": "r";"
     }else{
-        if(!length(v)){v=r}
+        if(!v){v=r}
         u=u""e": "v";"
     }
-    if(length(n)){u=u" # "n}
-    o=or(o,128);
+    if(n){u=u" # "n}
+    _s(128);
     return u;
 }
-function b(){
+function _b(){
     # section does not exists, we need to create
+    if(!v){return}
     d=split(s,j,".");
     for(k in j){
-        if(length(m)){m=m"."}
+        if(m){m=m"."}
         m=m""j[k];
         if(p!=m&&(m~"^"p".*")){
-            u="";
-            for(i=1;i<k;i++){u=u"\t"}
-            g[h++]=u""j[k]": {"
+            u=_i(k-1);
+            _e(u""j[k]": {")
         }else{x=k}
     }
-    u="";g[h++]=w();
+    _e(_w());
     for(d--;d>=x;d--){
-        u="";
-        for(i=d;i>0;i--){u=u"\t"}
-        g[h++]=u"};";u=""
-    }   
+        u=_i(d);
+        _e(u"};");
+        u=""
+    }
+    _s(128);
 }
 # split line by char
-function a(l){
-    split(l,c,"");
+function _a(){
     for(i=1;i<=length($0);i++){
-        s(c[i]);
-    }
-}
-# analyze char
-function s(c){
-    if(and(o,4)&&c!="\""){
-        # everything is allowed in quotation marks
-        k=k""c;
-    }else if(c==":"||c=="="){
-        # here we set value flag
-        o=or(o,1);t=k;k="";
-    }else if(c=="{"){
-        if(!and(o,2)){
-            # section opener, current key(k) = this(t)
-            d++;
-            if(length(p)>0){
-                p=p"."t;k="";t=""
+        c=substr($0,i,1);
+        if(_q(4)&&c!="\""){
+            # everything is allowed in quotation marks
+            k=k""c;
+        }else if(c==":"||c=="="){
+            # here we set value flag
+            _s(1);t=k;k="";
+        }else if(c=="{"){
+            if(!_q(2)){
+                # section opener, current key(k) = this(t)
+                d++;
+                if(p){
+                    p=p"."t;k="";t=""
+                }else{
+                    p=t;t=""
+                }
             }else{
-                p=t;t=""
-            }
-        }else{
-            # object opener in an array
-        }
-    }else if(c=="}"){
-        if(!and(o,2)){
-            # section closer
-            #
-            # if the section is closed and the value should be set but does not exist.
-            # we insert a new line here
-            if(s==p&&f~"^set$"&&(!and(o,128))){
-                if(length(v)){g[h++]=w()}else{o=or(o,128)}
+                # object opener in an array
             }
-            if(s~"^"p".*$"&&f~"^set$"&&(!and(o,128))){
-                b();
-            }            
-            # remove last path element and cleanup current(t)
-            if(sub(/\.[[:alnum:]]+$/,"",p)==0){
-                p=""
+        }else if(c=="}"){
+            if(!_q(2)){
+                # section closer
+                #
+                # if the section is closed and the value should be set but does not exist.
+                # we insert a new line here
+                if(s==p&&f~"^set$"&&(!_q(128))){
+                    if(v){_e(_w())}
+                }
+                if(s~"^"p"\\..*$"&&f~"^set$"&&(!_q(128))){
+                    if(v){_b()}
+                }
+                # remove last path element and cleanup current(t)
+                if(sub(/\.[[:alnum:]]+$/,"",p)==0){
+                    p=""
+                }
+                t="";d--
+            } else {
+                # object closer in an array
             }
-            t="";d--
-        } else {
-            # object closer in an array
+        }else if(c=="("){
+            # array opener
+            _s(2);
+        }else if(c==")"){
+            # array closer
+            _i(2);
+        }else if(_q(1)==1&&c=="\""){
+            # opening / closing quotation marks, assign string value on close
+            if(!_q(4)){_s(4);k=""}else{_u(4);r="\""k"\"";k=""}
+        }else if(_q(1)&&c==";"){
+            # value terminator ';'
+            if(length(r)==0){r=k;k=""};
+        }else if(_q(1)&&c=="#"){
+            # comment at the end of the line
+            _s(8);
+        }else if(match(c,"[^[:space:]]")){
+            k=k""c;
         }
-    }else if(c=="("){
-        # array opener
-        o=or(o,2);
-    }else if(c==")"){
-        # array closer
-        o=xor(o,2);
-    }else if(and(o,1)==1&&c=="\""){
-        # opening / closing quotation marks, assign string value on close
-        if(!and(o,4)){o=or(o,4);k=""}else{o=xor(o,4);r="\""k"\"";k=""}
-    }else if(and(o,1)&&c==";"){
-        # value terminator ';'
-        if(length(r)==0){r=k;k=""};
-    }else if(and(o,1)&&c=="#"){
-        # comment at the end of the line
-        o=or(o,8);
-    }else if(match(c,"[^[:space:]]")){
-        k=k""c;
     }
 }
-function p(l) {
-    _m=(s==p&&match(l,"^[[:space:]]*#.*"e".*:.*"));
-    if(length(l)&&((!match(l,"^[[:space:]]*#")&&!match(l,"^\s*$")&&!match(l,"^version.*$"))||_m)){
+function _p() {
+    # match key/value line in section also if commented out
+    b=(s==p&&match($0,"^[[:space:]]*#[[:space:]]*"e"[[:space:]]*:.*"));
+    if(length($0)&&((!match($0,"^[[:space:]]*#")&&!match($0,"^\\s*$")&&!match($0,"^version.*$"))||b)){
         # check if line is commented out
-        if(_m){sub("#[[:space:]]", "",l)}
+        if(b){sub("#([[:space:]]*)","",$0)}
         # value mode reset on each line
-        if(and(o,1)){o=xor(o,1)}
         # comment reset on each line
-        if(and(o,8)){o=xor(o,8)}
+        _u(9);
         # current (k), value(r), comment(n) rest on each line
         k="";r="";n="";
-        # call a to analyze character
-        a(l);
+        # call _a to analyze line
+        _a();
         # if k is not empty here, it must be a (unterminated) value or comment
-        if(length(k)>0){if(and(o,8)==8){n=k}else{r=k}}
+        if(length(k)>0){if(_q(8)){n=k}else{r=k}}
         # exact section and value match
-        if(f~"^list$"&&!_m&&(p==s||p~"^"s".*$"||length(s)==0)&&length(p)&&length(t)&&length(r)){
-            o=or(o,128);
+        if(f~"^list$"&&!b&&(p==s||p~"^"s"\\..*$"||!s)&&p&&t&&r){
             print(p"."t"="r)
         }
         if(s==p&&e==t) {
-            if(f~"^get$"&&!_m){o=or(o,256);print(r);exit;}
-            if(f~"^set$"){if(length(v)||_m){$0=w()}else{o=or(o,128)}}
-            if(f~"^unset$"){$0=w(1)}
+            if(f~"^get$"&&!b){_s(256);print(r);exit;}
+            if(f~"^set$"){if(v||b){$0=_w()}}
+            if(f~"^unset$"){$0=_w(1)}
         }
     }
 }
@@ -128,12 +154,13 @@ function p(l) {
 BEGIN {
 	f=ARGV[1];
 	s=ARGV[2];
-    if((f~"^[g|s]et|unset$"&&ARGV[2])){
+    if((f~"^(get|set|unset)$"&&s)){
         i=split(s,j,".");
-	    e=j[i];sub(/\.[[:alnum:]]+$/,"",s)
+	    e=j[i];
+        sub(/\.[[:alnum:]_]+$/,"",s)
     }
 	v=ARGV[3];
-	if(!ARGV[1]||(f~"^[g|s]et|unset$"&&!ARGV[2])||i==1){
+	if(!f||(!(f~"^(get|set|unset|list)$"))||(!(f~"^list$")&&i==1&&s)){
 		print "prudynt configuration helper v0.1";
 		print "";
 		print "Usage [get|set|list|unset] <section>.<setting> <value>";
@@ -143,24 +170,22 @@ BEGIN {
 		print "\t\tif value is not provided but setting exists as comment, it will be uncomment";
 		print "\tlist\tlist all configured <settings>. Can be limited by providing a <section>";
 		print "\tunset\tcomment a <setting> if exists";
-        o=or(o,320);f="";
-		exit;
+        f="";_s(320);exit;
 	}
+    
 	for (i=ARGC;i>2;i--){ARGC--}
 	ARGV[1]="/etc/prudynt.cfg";
 }
-{if(!and(o,256)){p($0);g[h++]=$0}}
+{if(o<256){if(o<128){_p()};_e($0)}}
 END{
-    if(f~"^set$"&&(!and(o,128))){
+    if(f~"^set$"&&(!_q(128))){
         # main section does not exists, we need to create
-        g[h++];b()
+        _e("");_b()
     }
-	if(f~"^set$|^unset$") {
-		for(i=0;i<h;i++) {
-            print g[i]>ARGV[1]
-		}
+	if(_q(128)) {
+        print g>ARGV[1]
 	}
-    if((and(o,256)||and(o,128))&&!and(o,64)){
+    if((_q(128)||_q(256))&&f){
         exit 0
     }
     exit 1
diff --git a/package/thingino-webui/files/var/www/x/tool-file-manager.cgi b/package/thingino-webui/files/var/www/x/tool-file-manager.cgi
index a7e691580..3a14ee65e 100755
--- a/package/thingino-webui/files/var/www/x/tool-file-manager.cgi
+++ b/package/thingino-webui/files/var/www/x/tool-file-manager.cgi
@@ -43,7 +43,7 @@ IFS=$'\n'
 for line in $lsfiles; do
 	echo "<tr>"
 	# skip .
-	[ -n "$(echo $line | grep \s\./$)" ] && continue
+	echo $line | grep -q ' \./$' && continue
 
 	name=${line##* }; line=${line% *}
 	path=$(echo "$dir/$name" | sed s#^//#/#)