diff --git a/INITIAL-COMMANDS.md b/INITIAL-COMMANDS.md
index 40f609b9..2df29e0c 100644
--- a/INITIAL-COMMANDS.md
+++ b/INITIAL-COMMANDS.md
@@ -4,7 +4,7 @@ Initial commands
 [![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-7.19-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)
 
@@ -22,8 +22,8 @@ Run the complete base installation:
       :local CertFileName "ISRG-Root-X2.pem";
       :local CertFingerprint "69729b8e15a86efc177a57afb7171dfc64add28c2fca8cf1507e34453ccb1470";
 
-      :if (!(([ /certificate/settings/get ]->"builtin-trust-anchors") = "trusted" && \
-           [[ :parse (":return [ :len [ /certificate/builtin/find where common-name=\"" . $CertCommonName . "\" ] ]") ]] > 0)) do={
+      :if (!([ /certificate/settings/get builtin-trust-anchors ] = "trusted" && \
+             [ :len [ /certificate/builtin/find where common-name=$CertCommonName ] ] > 0)) do={
         :put "Importing certificate...";
         /tool/fetch ($BaseUrl . "certs/" . $CertFileName) dst-path=$CertFileName as-value;
         :delay 1s;
diff --git a/README.md b/README.md
index 243e1fc5..50cc270c 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ RouterOS Scripts
 [![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-7.19-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/global-functions.rsc b/global-functions.rsc
index 50426b69..b4b164b3 100644
--- a/global-functions.rsc
+++ b/global-functions.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.15
+# requires RouterOS, version=7.19
 # requires device-mode, fetch, scheduler
 #
 # global functions
@@ -121,8 +121,8 @@
     :return false;
   }
 
-  :if (([ /certificate/settings/get ]->"builtin-trust-anchors") = "trusted" && \
-       [[ :parse (":return [ :len [ /certificate/builtin/find where common-name=\"" . $CommonName . "\" ] ]") ]] > 0) do={
+  :if ([ /certificate/settings/get builtin-trust-anchors ] = "trusted" && \
+       [ :len [ /certificate/builtin/find where common-name=$CommonName ] ] > 0) do={
     :return true;
   }
 
@@ -559,6 +559,12 @@
 :set FileGet do={
   :local FileName [ :tostr $1 ];
 
+  :global WaitForFile;
+
+  :if ([ $WaitForFile $FileName 0s ] = false) do={
+    :return false;
+  }
+
   :local FileVal false;
   :do {
     :set FileVal [ /file/get $FileName ];
@@ -1771,14 +1777,26 @@
   :global MAX;
 
   :set FileName [ $CleanFilePath $FileName ];
-  :local Delay ([ $MAX [ $EitherOr $WaitTime 2s ] 100ms ] / 10);
+  :local Delay ([ $MAX [ $EitherOr $WaitTime 2s ] 100ms ] / 9);
 
   :do {
-    :retry {
+    :retry { 
+      :if ([ :len [ /file/find where name=$FileName ] ] = 0) do={
+        :error false;
+      }
+    } delay=$Delay max=10;
+  } on-error={
+    :return false;
+  }
+
+  :while ([ :len [ /file/find where name=$FileName ] ] > 0) do={
+    :do {
       /file/get $FileName;
       :return true;
-    } delay=$Delay max=10;
-  } on-error={ }
+    } on-error={ }
+    :delay $Delay;
+    :set Delay ($Delay * 3 / 2);
+  }
 
   :return false;
 }
diff --git a/packages-update.rsc b/packages-update.rsc
index 43f67494..d3140f29 100644
--- a/packages-update.rsc
+++ b/packages-update.rsc
@@ -41,7 +41,8 @@
       /system/reboot;
     }
 
-    :local Interval [ $IfThenElse ($PackagesUpdateDeferReboot >= 1d) $PackagesUpdateDeferReboot 1d ];
+    :local Interval [ $IfThenElse ([ :totime $PackagesUpdateDeferReboot ] >= 1d) \
+        $PackagesUpdateDeferReboot 1d ];
     :local StartTime [ :tostr [ :totime (10800 + [ $GetRandomNumber 7200 ]) ] ];
     /system/scheduler/add name="_RebootForUpdate" start-time=$StartTime interval=$Interval \
         on-event=("/system/scheduler/remove \"_RebootForUpdate\"; " . \
@@ -158,7 +159,7 @@
       :error true;
     }
   } else={
-    :if ($PackagesUpdateDeferReboot = true || $PackagesUpdateDeferReboot >= 1d) do={
+    :if ($PackagesUpdateDeferReboot = true || [ :totime $PackagesUpdateDeferReboot ] >= 1d) do={
       $Schedule $ScriptName;
       :set ExitOK true;
       :error true;