diff --git a/CONTRIBUTIONS.md b/CONTRIBUTIONS.md
index 5bf5d089..00861c18 100644
--- a/CONTRIBUTIONS.md
+++ b/CONTRIBUTIONS.md
@@ -35,6 +35,7 @@ Add yourself to the list,
 [donate with PayPal ↗️](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)!
 
 * Abdul Mannan Abbasi
+* Alex Maier
 * Andrea Ruffini Perico
 * Andrew Cox
 * Christoph Boss (@Kampfwurst)
diff --git a/INITIAL-COMMANDS.md b/INITIAL-COMMANDS.md
index 79773bd9..40f609b9 100644
--- a/INITIAL-COMMANDS.md
+++ b/INITIAL-COMMANDS.md
@@ -18,17 +18,21 @@ Run the complete base installation:
 
     {
       :local BaseUrl "https://git.eworm.de/cgit/routeros-scripts/plain/";
+      :local CertCommonName "ISRG Root X2";
       :local CertFileName "ISRG-Root-X2.pem";
       :local CertFingerprint "69729b8e15a86efc177a57afb7171dfc64add28c2fca8cf1507e34453ccb1470";
 
-      :put "Importing certificate...";
-      /tool/fetch ($BaseUrl . "certs/" . $CertFileName) dst-path=$CertFileName as-value;
-      :delay 1s;
-      /certificate/import file-name=$CertFileName passphrase="";
-      :if ([ :len [ /certificate/find where fingerprint=$CertFingerprint ] ] != 1) do={
-        :error "Something is wrong with your certificates!";
+      :if (!(([ /certificate/settings/get ]->"builtin-trust-anchors") = "trusted" && \
+           [[ :parse (":return [ :len [ /certificate/builtin/find where common-name=\"" . $CertCommonName . "\" ] ]") ]] > 0)) do={
+        :put "Importing certificate...";
+        /tool/fetch ($BaseUrl . "certs/" . $CertFileName) dst-path=$CertFileName as-value;
+        :delay 1s;
+        /certificate/import file-name=$CertFileName passphrase="";
+        :if ([ :len [ /certificate/find where fingerprint=$CertFingerprint ] ] != 1) do={
+          :error "Something is wrong with your certificates!";
+        };
+        :delay 1s;
       };
-      :delay 1s;
       :put "Renaming global-config-overlay, if exists...";
       /system/script/set name=("global-config-overlay-" . [ /system/clock/get date ] . "-" . [ /system/clock/get time ]) [ find where name="global-config-overlay" ];
       :foreach Script in={ "global-config"; "global-config-overlay"; "global-functions" } do={
@@ -41,9 +45,11 @@ Run the complete base installation:
       :put "Scheduling to load configuration and functions...";
       /system/scheduler/remove [ find where name="global-scripts" ];
       /system/scheduler/add name="global-scripts" start-time=startup on-event="/system/script { run global-config; run global-functions; }";
-      :put "Renaming certificate by its common-name...";
-      :global CertificateNameByCN;
-      $CertificateNameByCN $CertFingerprint;
+      :if ([ :len [ /certificate/find where fingerprint=$CertFingerprint ] ] > 0) do={
+        :put "Renaming certificate by its common-name...";
+        :global CertificateNameByCN;
+        $CertificateNameByCN $CertFingerprint;
+      };
     };
 
 Then continue setup with
diff --git a/backup-email.rsc b/backup-email.rsc
index 632d2e60..8015beaa 100644
--- a/backup-email.rsc
+++ b/backup-email.rsc
@@ -27,6 +27,7 @@
 
   :global CleanName;
   :global DeviceInfo;
+  :global FileExists;
   :global FormatLine;
   :global LogPrint;
   :global MkDir;
@@ -124,17 +125,19 @@
     attach=$Attach; remove-attach=true });
 
   # wait for the mail to be sent
-  :local I 0;
-  :while ([ :len [ /file/find where name ~ ($FilePath . "\\.(backup|rsc)\$") ] ] > 0) do={
-    :if ($I >= 120) do={
-      $LogPrint warning $ScriptName ("Files are still available, sending e-mail failed.");
-      :set PackagesUpdateBackupFailure true;
-      :set ExitOK true;
-      :error false;
-    }
-    :delay 1s;
-    :set I ($I + 1);
+  :do {
+    :retry {
+      :if ([ $FileExists ($FilePath . ".conf") ".conf file" ] = true || \
+           [ $FileExists ($FilePath . ".backup") "backup" ] = true || \
+           [ $FileExists ($FilePath . ".rsc") "script" ] = true) do={
+        :error "Files are still available.";
+      }
+    } delay=1s max=120;
+  } on-error={
+    $LogPrint warning $ScriptName ("Files are still available, sending e-mail failed.");
+    :set PackagesUpdateBackupFailure true;
   }
+  # do not remove the files here, as the mail is still queued!
 } do={
   :global ExitError; $ExitError $ExitOK [ :jobname ] $Err;
 }
diff --git a/capsman-download-packages.capsman.rsc b/capsman-download-packages.capsman.rsc
index cab1e4c3..aaebf5c0 100644
--- a/capsman-download-packages.capsman.rsc
+++ b/capsman-download-packages.capsman.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.15
+# requires RouterOS, version=7.18
 #
 # download and cleanup packages for CAP installation from CAPsMAN
 # https://rsc.eworm.de/doc/capsman-download-packages.md
@@ -20,6 +20,7 @@
 
   :global CleanFilePath;
   :global DownloadPackage;
+  :global FileGet;
   :global LogPrint;
   :global MkDir;
   :global RmFile;
@@ -42,7 +43,7 @@
     :error false;
   }
 
-  :if ([ :len [ /file/find where name=$PackagePath type="directory" ] ] = 0) do={
+  :if ([ $FileGet $PackagePath ] = false) do={
     :if ([ $MkDir $PackagePath ] = false) do={
       $LogPrint warning $ScriptName ("Creating directory at CAPsMAN package path (" . \
         $PackagePath . ") failed!");
@@ -53,8 +54,8 @@
       "). Please place your packages!");
   }
 
-  :foreach Package in=[ /file/find where type=package \
-        package-version!=$InstalledVersion name~("^" . $PackagePath) ] do={
+  :foreach Package in=[ /file/find recursive where path=$PackagePath \
+        type="package" package-version!=$InstalledVersion ] do={
     :local File [ /file/get $Package ];
     :if ($File->"package-architecture" = "mips") do={
       :set ($File->"package-architecture") "mipsbe";
@@ -66,7 +67,7 @@
     }
   }
 
-  :if ([ :len [ /file/find where type=package name~("^" . $PackagePath) ] ] = 0) do={
+  :if ([ :len [ /file/find recursive where path=$PackagePath type="package" ] ] = 0) do={
     $LogPrint info $ScriptName ("No packages available, downloading default set.");
     :foreach Arch in={ "arm"; "mipsbe" } do={
       :foreach Package in={ "routeros"; "wireless" } do={
diff --git a/capsman-download-packages.template.rsc b/capsman-download-packages.template.rsc
index ea411201..ebbba709 100644
--- a/capsman-download-packages.template.rsc
+++ b/capsman-download-packages.template.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.15
+# requires RouterOS, version=7.18
 #
 # download and cleanup packages for CAP installation from CAPsMAN
 # https://rsc.eworm.de/doc/capsman-download-packages.md
@@ -21,6 +21,7 @@
 
   :global CleanFilePath;
   :global DownloadPackage;
+  :global FileGet;
   :global LogPrint;
   :global MkDir;
   :global RmFile;
@@ -44,7 +45,7 @@
     :error false;
   }
 
-  :if ([ :len [ /file/find where name=$PackagePath type="directory" ] ] = 0) do={
+  :if ([ $FileGet $PackagePath ] = false) do={
     :if ([ $MkDir $PackagePath ] = false) do={
       $LogPrint warning $ScriptName ("Creating directory at CAPsMAN package path (" . \
         $PackagePath . ") failed!");
@@ -55,8 +56,8 @@
       "). Please place your packages!");
   }
 
-  :foreach Package in=[ /file/find where type=package \
-        package-version!=$InstalledVersion name~("^" . $PackagePath) ] do={
+  :foreach Package in=[ /file/find recursive where path=$PackagePath \
+        type="package" package-version!=$InstalledVersion ] do={
     :local File [ /file/get $Package ];
     :if ($File->"package-architecture" = "mips") do={
       :set ($File->"package-architecture") "mipsbe";
@@ -68,7 +69,7 @@
     }
   }
 
-  :if ([ :len [ /file/find where type=package name~("^" . $PackagePath) ] ] = 0) do={
+  :if ([ :len [ /file/find recursive where path=$PackagePath type="package" ] ] = 0) do={
     $LogPrint info $ScriptName ("No packages available, downloading default set.");
 # NOT /interface/wifi/ #
     :foreach Arch in={ "arm"; "mipsbe" } do={
diff --git a/capsman-download-packages.wifi.rsc b/capsman-download-packages.wifi.rsc
index a8103569..7de0431f 100644
--- a/capsman-download-packages.wifi.rsc
+++ b/capsman-download-packages.wifi.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.15
+# requires RouterOS, version=7.18
 #
 # download and cleanup packages for CAP installation from CAPsMAN
 # https://rsc.eworm.de/doc/capsman-download-packages.md
@@ -20,6 +20,7 @@
 
   :global CleanFilePath;
   :global DownloadPackage;
+  :global FileGet;
   :global LogPrint;
   :global MkDir;
   :global RmFile;
@@ -42,7 +43,7 @@
     :error false;
   }
 
-  :if ([ :len [ /file/find where name=$PackagePath type="directory" ] ] = 0) do={
+  :if ([ $FileGet $PackagePath ] = false) do={
     :if ([ $MkDir $PackagePath ] = false) do={
       $LogPrint warning $ScriptName ("Creating directory at CAPsMAN package path (" . \
         $PackagePath . ") failed!");
@@ -53,8 +54,8 @@
       "). Please place your packages!");
   }
 
-  :foreach Package in=[ /file/find where type=package \
-        package-version!=$InstalledVersion name~("^" . $PackagePath) ] do={
+  :foreach Package in=[ /file/find recursive where path=$PackagePath \
+        type="package" package-version!=$InstalledVersion ] do={
     :local File [ /file/get $Package ];
     :if ($File->"package-architecture" = "mips") do={
       :set ($File->"package-architecture") "mipsbe";
@@ -66,7 +67,7 @@
     }
   }
 
-  :if ([ :len [ /file/find where type=package name~("^" . $PackagePath) ] ] = 0) do={
+  :if ([ :len [ /file/find recursive where path=$PackagePath type="package" ] ] = 0) do={
     $LogPrint info $ScriptName ("No packages available, downloading default set.");
     :foreach Arch in={ "arm"; "arm64" } do={
       :local Packages { "arm"={ "routeros"; "wifi-qcom"; "wifi-qcom-ac" };
diff --git a/check-routeros-update.rsc b/check-routeros-update.rsc
index e28a0190..8b80ddeb 100644
--- a/check-routeros-update.rsc
+++ b/check-routeros-update.rsc
@@ -28,6 +28,7 @@
   :global EscapeForRegEx;
   :global FetchUserAgentStr;
   :global LogPrint;
+  :global RebootForUpdate;
   :global ScriptFromTerminal;
   :global ScriptLock;
   :global SendNotification2;
@@ -62,9 +63,14 @@
   $WaitFullyConnected;
 
   :if ([ :len [ /system/scheduler/find where name="_RebootForUpdate" ] ] > 0) do={
-    $LogPrint info $ScriptName ("A reboot for update is already scheduled.");
-    :set ExitOK true;
-    :error false;
+    :if ([ :typeof $RebootForUpdate ] = "nothing") do={
+      $LogPrint info $ScriptName ("Found a stale scheduler for reboot, removing.");
+      /system/scheduler/remove "_RebootForUpdate";
+    } else={
+      $LogPrint info $ScriptName ("A reboot for update is already scheduled.");
+      :set ExitOK true;
+      :error false;
+    }
   }
 
   $LogPrint debug $ScriptName ("Checking for updates...");
diff --git a/doc/capsman-download-packages.md b/doc/capsman-download-packages.md
index 57222272..4daad494 100644
--- a/doc/capsman-download-packages.md
+++ b/doc/capsman-download-packages.md
@@ -4,7 +4,7 @@ Download packages for CAP upgrade from CAPsMAN
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.15-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.18-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/packages-update.md b/doc/packages-update.md
index 75225fe2..a0a17956 100644
--- a/doc/packages-update.md
+++ b/doc/packages-update.md
@@ -46,8 +46,8 @@ Configuration
 
 The configuration goes to `global-config-overlay`, this is the only parameter:
 
-* `PackagesUpdateDeferReboot`: defer the reboot for night (between 3 AM
-  and 5 AM)
+* `PackagesUpdateDeferReboot`: defer the reboot for night (between 3 AM and
+  5 AM), use a numerical value in days suffixed with a `d` to defer further
 
 By modifying the scheduler's `start-time` you can force the reboot at
 different time.
diff --git a/global-functions.rsc b/global-functions.rsc
index 759b2744..74ca91b0 100644
--- a/global-functions.rsc
+++ b/global-functions.rsc
@@ -38,6 +38,8 @@
 :global ExitError;
 :global FetchHuge;
 :global FetchUserAgentStr;
+:global FileExists;
+:global FileGet;
 :global FormatLine;
 :global FormatMultiLines;
 :global GetMacVendor;
@@ -363,6 +365,7 @@
 
   :global CertificateAvailable;
   :global CleanFilePath;
+  :global FileExists;
   :global LogPrint;
   :global MkDir;
   :global RmFile;
@@ -383,7 +386,7 @@
     :return false;
   }
 
-  :if ([ :len [ /file/find where name=$PkgDest type="package" ] ] > 0) do={
+  :if ([ $FileExists $PkgDest "package" ] = true) do={
     $LogPrint info $0 ("Package file " . $PkgName . " already exists.");
     :return true;
   }
@@ -405,7 +408,7 @@
     :return false;
   }
 
-  :if ([ /file/get [ find where name=$PkgDest ] type ] != "package") do={
+  :if ([ $FileExists $PkgDest "package" ] = false) do={
     $LogPrint warning $0 ("Downloaded file is not a package, removing.");
     $RmFile $PkgDest;
     :return false;
@@ -529,6 +532,43 @@
     $Resource->"architecture-name" . " " . $Caller . "/Fetch (https://rsc.eworm.de/)");
 }
 
+# check for existence of file, optionally with type
+:set FileExists do={
+  :local FileName [ :tostr $1 ];
+  :local Type     [ :tostr $2 ];
+
+  :global FileGet;
+
+  :local FileVal [ $FileGet $FileName ];
+  :if ($FileVal = false) do={
+    :return false;
+  }
+
+  :if ([ :len ($FileVal->"size") ] = 0) do={
+    :return false;
+  }
+
+  :if ([ :len $Type ] = 0 || $FileVal->"type" = $Type) do={
+    :return true;
+  }
+
+  :return false;
+}
+
+# get file properties in array, or false on error
+:set FileGet do={
+  :local FileName [ :tostr $1 ];
+
+  :local FileVal;
+  :do {
+    :set FileVal [ /file/get $FileName ];
+  } on-error={
+    :return false;
+  }
+
+  :return $FileVal;
+}
+
 # format a line for output
 :set FormatLine do={
   :local Key    [ :tostr $1 ];
@@ -880,6 +920,7 @@
   :local Path [ :tostr $1 ];
 
   :global CleanFilePath;
+  :global FileGet;
   :global LogPrint;
   :global RmDir;
   :global WaitForFile;
@@ -917,7 +958,8 @@
 
   $LogPrint debug $0 ("Making directory: " . $Path);
 
-  :if ([ :len [ /file/find where name=$Path type="directory" ] ] = 1) do={
+  :local PathVal [ $FileGet $Path ];
+  :if ($PathVal->"type" = "directory") do={
     $LogPrint debug $0 ("... which already exists.");
     :return true;
   }
@@ -1042,25 +1084,26 @@
 :set RmDir do={
   :local DirName [ :tostr $1 ];
 
+  :global FileGet;
   :global LogPrint;
 
   $LogPrint debug $0 ("Removing directory: ". $DirName);
 
-  :if ([ :len [ /file/find where name=$DirName type!=directory ] ] > 0) do={
-    $LogPrint error $0 ("Directory '" . $DirName . "' is not a directory.");
-    :return false;
-  }
-
-  :local Dir [ /file/find where name=$DirName type=directory ];
-  :if ([ :len $Dir ] = 0) do={
+  :local DirVal [ $FileGet $DirName ];
+  :if ($DirVal = false) do={
     $LogPrint debug $0 ("... which does not exist.");
     :return true;
   }
 
+  :if ($DirVal->"type" != "directory") do={
+    $LogPrint error $0 ("Directory '" . $DirName . "' is not a directory.");
+    :return false;
+  }
+
   :onerror Err {
-    /file/remove $Dir;
+    /file/remove $DirName;
   } do={
-    $LogPrint error $0 ("Removing directory '" . $DirName . "' (" . $Dir . ") failed: " . $Err);
+    $LogPrint error $0 ("Removing directory '" . $DirName . "' failed: " . $Err);
     :return false;
   }
   :return true;
@@ -1070,25 +1113,26 @@
 :set RmFile do={
   :local FileName [ :tostr $1 ];
 
+  :global FileGet;
   :global LogPrint;
 
   $LogPrint debug $0 ("Removing file: ". $FileName);
 
-  :if ([ :len [ /file/find where name=$FileName (type=directory or type=disk) ] ] > 0) do={
-    $LogPrint error $0 ("File '" . $FileName . "' is not a file.");
-    :return false;
-  }
-
-  :local File [ /file/find where name=$FileName !(type=directory or type=disk) ];
-  :if ([ :len $File ] = 0) do={
+  :local FileVal [ $FileGet $FileName ];
+  :if ($FileVal = false) do={
     $LogPrint debug $0 ("... which does not exist.");
     :return true;
   }
 
+  :if ($FileVal->"type" = "directory" || $FileVal->"type" = "disk") do={
+    $LogPrint error $0 ("File '" . $FileName . "' is not a file.");
+    :return false;
+  }
+
   :onerror Err {
-    /file/remove $File;
+    /file/remove $FileName;
   } do={
-    $LogPrint error $0 ("Removing file '" . $FileName . "' (" . $File . ") failed: " . $Err);
+    $LogPrint error $0 ("Removing file '" . $FileName . "' failed: " . $Err);
     :return false;
   }
   :return true;
@@ -1729,25 +1773,14 @@
   :global MAX;
 
   :set FileName [ $CleanFilePath $FileName ];
-  :local I 1;
   :local Delay ([ $MAX [ $EitherOr $WaitTime 2s ] 100ms ] / 10);
 
-  :while ([ :len [ /file/find where name=$FileName ] ] = 0) do={
-    :if ($I >= 10) do={
-      :return false;
-    }
-    :delay $Delay;
-    :set I ($I + 1);
-  }
-
-  :while ([ :len [ /file/find where name=$FileName ] ] > 0) do={
-    :do {
+  :do {
+    :retry {
       /file/get $FileName;
       :return true;
-    } on-error={ }
-    :delay $Delay;
-    :set Delay ($Delay * 3 / 2);
-  }
+    } delay=$Delay max=10;
+  } on-error={ }
 
   :return false;
 }
diff --git a/mod/notification-email.rsc b/mod/notification-email.rsc
index 52937668..ad9762a3 100644
--- a/mod/notification-email.rsc
+++ b/mod/notification-email.rsc
@@ -40,9 +40,11 @@
 
   :global EitherOr;
   :global EMailGenerateFrom;
+  :global FileExists;
   :global IsDNSResolving;
   :global IsTimeSync;
   :global LogPrint;
+  :global RmFile;
 
   :local AllDone true;
   :local QueueLen [ :len $EmailQueue ];
@@ -93,7 +95,7 @@
       :onerror Err {
         :local Attach ({});
         :foreach File in=[ :toarray [ $EitherOr ($Message->"attach") "" ] ] do={
-          :if ([ :len [ /file/find where name=$File ] ] = 1) do={
+          :if ([ $FileExists $File ] = true) do={
             :set Attach ($Attach, $File);
           } else={
             $LogPrint warning $0 ("File '" . $File . "' does not exist, can not attach.");
@@ -110,7 +112,7 @@
             :set Wait false;
             :if (($Message->"remove-attach") = true) do={
               :foreach File in=$Attach do={
-                /file/remove $File;
+                $RmFile $File;
               }
             }
           }
diff --git a/mod/ssh-keys-import.rsc b/mod/ssh-keys-import.rsc
index 94675255..7bdc95da 100644
--- a/mod/ssh-keys-import.rsc
+++ b/mod/ssh-keys-import.rsc
@@ -75,6 +75,7 @@
   :local User     [ :tostr $2 ];
 
   :global EitherOr;
+  :global FileExists;
   :global LogPrint;
   :global ParseKeyValueStore;
   :global SSHKeysImport;
@@ -84,8 +85,7 @@
     :return false;
   }
 
-  :local File [ /file/find where name=$FileName ];
-  :if ([ :len $File ] = 0) do={
+  :if ([ $FileExists $FileName ] = true) do={
     $LogPrint warning $0 ("File '" . $FileName . "' does not exist.");
     :return false;
   }
diff --git a/packages-update.rsc b/packages-update.rsc
index 4fde131b..43f67494 100644
--- a/packages-update.rsc
+++ b/packages-update.rsc
@@ -31,19 +31,24 @@
   :local Schedule do={
     :local ScriptName [ :tostr $1 ];
 
+    :global PackagesUpdateDeferReboot;
+
     :global GetRandomNumber;
+    :global IfThenElse;
     :global LogPrint;
 
     :global RebootForUpdate do={
       /system/reboot;
     }
 
+    :local Interval [ $IfThenElse ($PackagesUpdateDeferReboot >= 1d) $PackagesUpdateDeferReboot 1d ];
     :local StartTime [ :tostr [ :totime (10800 + [ $GetRandomNumber 7200 ]) ] ];
-    /system/scheduler/add name="_RebootForUpdate" start-time=$StartTime interval=1d \
+    /system/scheduler/add name="_RebootForUpdate" start-time=$StartTime interval=$Interval \
         on-event=("/system/scheduler/remove \"_RebootForUpdate\"; " . \
         ":global RebootForUpdate; \$RebootForUpdate;");
     $LogPrint info $ScriptName ("Scheduled reboot for update at " . $StartTime . \
-        " local time (" . [ /system/clock/get time-zone-name ] . ").");
+        " local time (" . [ /system/clock/get time-zone-name ] . ")" . \
+        [ $IfThenElse ($Interval > 1d) (" deferred by " . $Interval) ] . ".");
     :return true;
   }
 
@@ -153,7 +158,7 @@
       :error true;
     }
   } else={
-    :if ($PackagesUpdateDeferReboot = true) do={
+    :if ($PackagesUpdateDeferReboot = true || $PackagesUpdateDeferReboot >= 1d) do={
       $Schedule $ScriptName;
       :set ExitOK true;
       :error true;
diff --git a/telegram-chat.rsc b/telegram-chat.rsc
index fdd08838..7f7b7a79 100644
--- a/telegram-chat.rsc
+++ b/telegram-chat.rsc
@@ -30,6 +30,7 @@
   :global CertificateAvailable;
   :global EitherOr;
   :global EscapeForRegEx;
+  :global FileExists;
   :global GetRandom20CharAlNum;
   :global IfThenElse;
   :global LogPrint;
@@ -154,7 +155,7 @@
             :if ([ $WaitForFile ($File . ".done") [ $EitherOr $TelegramChatRunTime 20s ] ] = false) do={
               :set State ([ $SymbolForNotification "warning-sign" ] . "The command did not finish, still running in background.\n\n");
             }
-            :if ([ :len [ /file/find where name=($File . ".failed") ] ] > 0) do={
+            :if ([ $FileExists ($File . ".failed") ] = true) do={
               :set State ([ $SymbolForNotification "cross-mark" ] . "The command failed with an error!\n\n");
             }
             :local Content ([ /file/read chunk-size=32768 file=$File as-value ]->"data");