diff --git a/build/deploy-ftp.sh b/build/deploy-ftp.sh
index 7d30ae3c..82ed067a 100644
--- a/build/deploy-ftp.sh
+++ b/build/deploy-ftp.sh
@@ -1,12 +1,12 @@
 #!/bin/sh
 
-set -e
-
 HOST="hactrn.kostersitz.com"
 USER="if0_35726802@hactrn.kostersitz.com"
 DIR="/images"
 TESTDIR="test"
 NETRC="$HOME/.netrc"
+RETRY_LIMIT=5
+retry_count=0
 
 if test -z "$FTP_SECRET"; then
     echo 'ERROR: No password in $FTP_SECRET.'
@@ -18,11 +18,12 @@ echo "login $USER"          >> "$NETRC"
 echo "password $FTP_SECRET" >> "$NETRC"
 chmod 600 "$NETRC"
 
-(cd out; tar czf $EMULATOR.tgz $EMULATOR)
+upload_file(){
+    (cd out; tar czf $EMULATOR.tgz $EMULATOR)
 
-echo "Deploying as $USER at $HOST"
+    echo "Deploying as $USER at $HOST"
 
-ftp "$HOST" <<EOF
+    ftp "$HOST" <<EOF
 passive on
 type image
 cd $DIR
@@ -30,49 +31,64 @@ lcd out
 put $EMULATOR.tgz
 bye
 EOF
+}
 
-# test the upload and see if it expands correctly
-echo "Testing download of $EMULATOR.tgz"
-mkdir -p "$TESTDIR"
-cd "$TESTDIR"
+test_archive_integrity(){
+    echo "Testing download of $EMULATOR.tgz"
+    mkdir -p "$TESTDIR"
+    cd "$TESTDIR"
 
-curl "http://$HOST/$DIR/$EMULATOR.tgz" -o "$EMULATOR.tgz"
+    curl "http://$HOST/$DIR/$EMULATOR.tgz" -o "$EMULATOR.tgz"
 
-if [ ! -f "$EMULATOR.tgz" ]; then
-    echo "File $EMULATOR.tgz not found!"
-    exit 1
-else
-    echo "Testing archive $EMULATOR.tgz"
-    tar -xzf "$EMULATOR.tgz"
-    if [ $? -eq 0 ]; then
-        echo "Unpacking successful!"
+    if [ ! -f "$EMULATOR.tgz" ]; then
+        echo "File $EMULATOR.tgz not found!"
+        cd ..
+        rm -rf "$TESTDIR"
+        return 1
     else
-        echo "Error unpacking $EMULATOR.tgz: $(tar -xzf "$EMULATOR.tgz" 2>&1)"
-        exit 1
+        echo "Testing archive $EMULATOR.tgz"
+        if tar -xzf "$EMULATOR.tgz"; then
+            echo "Unpacking successful!"
+        else
+            echo "Error unpacking $EMULATOR.tgz: $(tar -xzf "$EMULATOR.tgz" 2>&1)"
+            cd ..
+            rm -rf "$TESTDIR"
+            return 1
+        fi
     fi
-fi
 
-echo "Testing archive integrity"
-# Define the paths to the folders
-BUILDDIR="../$EMULATOR"
-DLDIR="./$EMULATOR"
+    echo "Testing archive integrity"
+    BUILDDIR="../$EMULATOR"
+    DLDIR="./$EMULATOR"
 
-# Generate MD5 hashes for files in FOLDER1 (with relative filenames)
-find "$BUILDDIR" -type f -exec md5sum {} + | sed "s|$BUILDDIR/||" > "$BUILDDIR_hashes.txt"
+    find "$BUILDDIR" -type f -exec md5sum {} + | sed "s|$BUILDDIR/||" > "$BUILDDIR_hashes.txt"
+    find "$DLDIR" -type f -exec md5sum {} + | sed "s|$DLDIR/||" > "$DLDIR_hashes.txt"
 
-# Generate MD5 hashes for files in FOLDER2 (with relative filenames)
-find "$DLDIR" -type f -exec md5sum {} + | sed "s|$DLDIR/||" > "$DLDIR_hashes.txt"
+    if cmp -s "$BUILDDIR_hashes.txt" "$DLDIR_hashes.txt"; then
+        echo "The contents of $BUILDDIR and $DLDIR are binary identical."
+        cd ..
+        rm -rf "$TESTDIR"
+        return 0
+    else
+        echo "Differences found between $BUILDDIR and $DLDIR:"
+        diff -u "$BUILDDIR_hashes.txt" "$DLDIR_hashes.txt"
+        cd ..
+        rm -rf "$TESTDIR"
+        return 1
+    fi
+}
 
-# Compare the hash files
-if cmp -s "$BUILDDIR_hashes.txt" "$DLDIR_hashes.txt"; then
-    echo "The contents of $BUILDDIR and $DLDIR are binary identical."
-else
-    echo "Differences found between $BUILDDIR and $DLDIR:"
-    diff -u "$BUILDDIR_hashes.txt" "$DLDIR_hashes.txt"
-fi
 
-# Clean up temporary files
-cd ..
-rm -r "$TESTDIR"
+while [ $retry_count -lt $RETRY_LIMIT ]; do
+    upload_file
+    if test_archive_integrity; then
+        echo "File integrity verified successfully."
+        exit 0
+    else
+        echo "File integrity verification failed, retrying... ($((retry_count+1))/$RETRY_LIMIT)"
+        retry_count=$((retry_count+1))
+    fi
+done
 
-exit 0
+echo "Reached maximum retry limit, exiting with failure."
+exit 1