diff --git a/README.md b/README.md
index 92b3b46..3b22950 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,12 @@ NB: You may want to change the `bash -s` parameter to fit your steam user if dif
 
 This will copy the `arkmanager` script and its daemon to the proper directories and will create an empty log directory in `/var/log` for ARK Server Tools.
 
+To instead perform a user-install of ARK Server Tools as an unprivileged user, run this command:
+
+```sh
+curl -sL http://git.io/vtf5N | bash -s -- --me
+```
+
 ## Configuration
 
 Stored in `/etc/arkmanager/arkmanager.cfg` you can find the variables needed to start the server, like the port numbers, the system environment variables and so on.
@@ -54,6 +60,12 @@ ark_DifficultyOffset=1
 Your session name may not contain special characters (eg. `!![EU]!! Aw&some ARK`) as it could break the startup command.  
 In this case you may want to comment out the `ark_SessionName` variable and define it inside your **GameUserSettings.ini** file instead.
 
+To specify an option without an argument (e.g. `bRawSockets`), specify an empty argument (e.g. `ark_bRawSockets=""`).
+
+To specify a dash-option without an argument (e.g. `-log`), add the option="" prefixed with `arkflag_` (e.g. `arkflag_log=""`).
+
+To specify a dash-option with an argument (e.g. `-StructureDestructionTag=DestroySwampSnowStructures`), add the option=value prefixed with `arkopt_` (e.g. `arkopt_StructureDestructionTag=DestroySwampSnowStructures`).
+
 You can override or add variables for a specific system user creating a file called `.arkmanager.cfg` in the home directory of the system user.
 
 ## Install ARK Server
@@ -80,24 +92,25 @@ Stops ARK server
 Restarts ARK server
 
 #### arkmanager update
-Manually updates ARK server if a new version is available
+Manually updates ARK server if a new version is available.
+This accepts zero or more of the below options.
 
-#### arkmanager update --force
+##### arkmanager update --force
 Apply update without check the current version
 
-#### arkmanager update --safe
+##### arkmanager update --safe
 Waits for server to perform world save and then updates.
 
-#### arkmanager update --warn
+##### arkmanager update --warn
 Warns the players for a configurable amount of time before updating.  Should be suitable for adding to a cron job.
 
-#### arkmanager update --validate
+##### arkmanager update --validate
 Validates all ARK server files
 
-#### arkmanager update --update-mods
+##### arkmanager update --update-mods
 Updates installed and requested mods
 
-#### arkmanager update --backup
+##### arkmanager update --backup
 Takes a backup of the save files before updating.
 
 #### arkmanager status
diff --git a/tools/arkmanager b/tools/arkmanager
index 5594214..5321bea 100755
--- a/tools/arkmanager
+++ b/tools/arkmanager
@@ -311,12 +311,11 @@ function checkForUpdate(){
 function isUpdateNeeded(){
   getCurrentVersion
   getAvailableVersion
-  if [ "$bnumber" -eq "$instver" ]; then
+  if [ "$bnumber" = "Unknown" -o "$bnumber" -eq "$instver" ]; then
     return 1   # no update needed
   else
     return 0   # update needed
   fi
-
 }
 
 #
@@ -365,6 +364,9 @@ function getCurrentVersion(){
 function getAvailableVersion(){
   rm -f "$steamcmd_appinfocache"
   bnumber=`$steamcmdroot/$steamcmdexec +@NoPromptForPassword 1 +login ${steamlogin:-anonymous} +app_info_update 1 +app_info_print "$appid" +quit | while read name val; do if [ "${name}" == "{" ]; then parseSteamACF ".depots.branches.public" "buildid"; break; fi; done`
+  if [ -z "$bnumber" ]; then
+    bnumber="Unknown"
+  fi
   return $bnumber
 }
 
@@ -393,6 +395,30 @@ function isTheServerRunning(){
 function isTheServerUp(){
   $lsof -i :"$ark_Port" > /dev/null
   result=$?
+  if [ $result -ne 0 ]; then
+    perl -MSocket -MFcntl -e '
+      my $port = int($ARGV[0]);
+      socket(my $socket, PF_INET, SOCK_DGRAM, 0);
+      setsockopt($socket, SOL_SOCKET, SO_RCVTIMEO, pack("i4", 1, 0, 0, 0));
+      my $sockaddr = pack_sockaddr_in($port, inet_aton("127.0.0.1"));
+      send($socket, "\xff\xff\xff\xffTSource Engine Query\x00", 0, $sockaddr);
+      my $flags = fcntl($socket, F_GETFL, 0) or exit(1);
+      fcntl($socket, F_SETFL, $flags | O_NONBLOCK) or exit(1);
+      my $data = "";
+      my $rin = "";
+      vec($rin, fileno($socket), 1) = 1;
+      if (select($rin, undef, undef, 0.25) >= 0) {
+        recv($socket, $data, 1400, 0) or exit(1);
+        my ($servername, $mapname, $game, $fullname, $rest) = split(/\x00/, substr($data, 6), 5);
+        my $maxplayers = ord(substr($rest, 3, 1));
+        if ($maxplayers == 0) { exit(1); }
+        exit(0);
+      } else {
+        exit(1);
+      }
+      ' "${ark_QueryPort}"
+    result=$?
+  fi
   # In this case, the result is:
   # 1 if the command fail. The port is not listenning
   # 0 if the command succeed. The port is listenning
@@ -1013,6 +1039,10 @@ doExtractMod(){
 doInstallMod(){
   local modid=$1
 
+  if [ -f "$steamcmdroot/steamapps/workshop/appworkshop_${mod_appid}.acf" ]; then
+    sed -i "/^\\t\\t\"${modid}\"/,/^\\t\\t}/d" "$steamcmdroot/steamapps/workshop/appworkshop_${mod_appid}.acf"
+  fi
+
   if doDownloadMod $modid; then
     doExtractMod $modid
     echo "Mod $modid installed"