diff --git a/contrib/updatecheck/calcversions.sh b/contrib/updatecheck/calcversions.sh
index da502b97..1052c352 100755
--- a/contrib/updatecheck/calcversions.sh
+++ b/contrib/updatecheck/calcversions.sh
@@ -4,3 +4,4 @@ revision=`git describe --always`
 echo "ebusd=${version},${revision}" > versions.txt
 files=`find config/ -type f -or -type l`
 ../../src/lib/ebus/test/test_filereader $files|sed -e 's#^config/##' -e 's#^\([^ ]*\) #\1=#' -e 's# #,#g'|sort >> versions.txt
+./oldtest_filereader $files|sed -e 's#^config/##' -e 's#^\([^ ]*\) #\1=#' -e 's# #,#g'|sort >> oldversions.txt
diff --git a/contrib/updatecheck/index.php b/contrib/updatecheck/index.php
index 9a0105a6..6a4f092e 100644
--- a/contrib/updatecheck/index.php
+++ b/contrib/updatecheck/index.php
@@ -5,7 +5,7 @@ if (substr($agent, 0, 5)==='ebusd') {
   $r = @file_get_contents('php://input');
   header('Content-Type: text/plain');
   $r = @json_decode($r, true);
-  echo checkUpdate(@$r['v'], @$r['r'], @$r['l']);
+  echo checkUpdate(@$r['v'], @$r['r'], @$r['a'], @$r['l']);
   exit;
 }
 header('HTTP/1.1 404 Not Found');
diff --git a/contrib/updatecheck/prepend.inc b/contrib/updatecheck/prepend.inc
index c4f2c144..bb93f14c 100644
--- a/contrib/updatecheck/prepend.inc
+++ b/contrib/updatecheck/prepend.inc
@@ -1,21 +1,26 @@
 <?php
-$v = @file_get_contents('versions.txt');
 $versions = array();
-if ($v) {
-  $v = explode("\n", $v);
-  $func = function($val, $k) {
-    global $versions;
-    $val = explode('=', $val);
-    if (count($val)>1) {
-      $versions[$val[0]] = explode(',', $val[1]);
-    }
-  };
-  array_walk($v, $func);
+function readVersions($old=false) {
+  global $versions;
+  $versions = array();
+  $v = @file_get_contents(($old?'old':'').'versions.txt');
+  if ($v) {
+    $v = explode("\n", $v);
+    $func = function($val, $k) {
+      global $versions;
+      $val = explode('=', $val);
+      if (count($val)>1) {
+        $versions[$val[0]] = explode(',', $val[1]);
+      }
+    };
+    array_walk($v, $func);
+  }
 }
-function checkUpdate($ebusdVersion, $ebusdRelease, $loadedFiles) {
+function checkUpdate($ebusdVersion, $ebusdRelease, $architecture, $loadedFiles) {
   if (!$ebusdVersion) {
     return 'invalid request';
   }
+  readVersions($architecture && substr($architecture, 0, 3)!=='arm' && ($ebusdVersion<'3.3' || ($ebusdVersion==='3.3' && ($ebusdRelease==='v3.3' || (strtok($ebusdRelease, '-')==='v3.3') && strtok('-')<18))));
   global $versions;
   $ret = 'unknown';
   if ($ebusdVersion==$versions['ebusd'][0] && $ebusdRelease==$versions['ebusd'][1]) {
@@ -39,7 +44,7 @@ function checkUpdate($ebusdVersion, $ebusdRelease, $loadedFiles) {
       }
     }
   }
-  if (strlen($configs)>100) {
+  if (strlen($configs)>1000) {
     return $ret.($newerAvailable?', '.$newerAvailable.' newer':', different').' configuration files available';
   }
   return $ret.$configs;