diff --git a/encoder/firmware.php b/encoder/firmware.php
index 8f10762..1f71991 100755
--- a/encoder/firmware.php
+++ b/encoder/firmware.php
@@ -1,7 +1,7 @@
 <?php
 
 exec("sudo chmod 444 /sys/class/dmi/id/product_uuid");
-$version = 6;
+$version = 7;
 
 function fail(string $msg): never
 {
diff --git a/setup.sh b/setup.sh
index 1fcd8d4..8f67769 100644
--- a/setup.sh
+++ b/setup.sh
@@ -1,8 +1,22 @@
 sudo cp -r encoder/* /var/www/encoder/
 sudo cp -r html/* /var/www/html/
-sudo cp users.json /var/www/users.json
 sudo cp attempts.json /var/www/attempts.json
 DEVICE_ID="$(sudo cat /sys/class/dmi/id/product_uuid | tr -d '\n')"
 sudo sed -i 's/certificatecertificatecertificatecertificate/'$DEVICE_ID'/g' /var/www/html/certification.html
 sudo chown -R www-data:www-data /var/www/*
+
+SOURCE_FILE="users.json"
+TARGET_FILE="/var/www/users.json"
+
+if [ ! -f "$TARGET_FILE" ]; then
+    cp "$SOURCE_FILE" "$TARGET_FILE"
+fi
+
+SOURCE_FILE="users.json"
+TARGET_FILE="/var/www/users.json"
+
+if [ ! -f "$TARGET_FILE" ]; then
+    cp "$SOURCE_FILE" "$TARGET_FILE"
+fi
+
 sudo reboot
\ No newline at end of file