diff --git a/assets/html/cs/tethering_help.html b/assets/html/cs/tethering_help.html
index 7b3165f..92ffb5a 100644
--- a/assets/html/cs/tethering_help.html
+++ b/assets/html/cs/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/cs/tethering_usb_help.html b/assets/html/cs/tethering_usb_help.html
index 85631f6..425431f 100644
--- a/assets/html/cs/tethering_usb_help.html
+++ b/assets/html/cs/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/cs/tethering_wifi_help.html b/assets/html/cs/tethering_wifi_help.html
index 73f9661..630438c 100644
--- a/assets/html/cs/tethering_wifi_help.html
+++ b/assets/html/cs/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/da/tethering_help.html b/assets/html/da/tethering_help.html
index 30363e7..3b2a553 100644
--- a/assets/html/da/tethering_help.html
+++ b/assets/html/da/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/da/tethering_usb_help.html b/assets/html/da/tethering_usb_help.html
index be60902..f9f7fc1 100644
--- a/assets/html/da/tethering_usb_help.html
+++ b/assets/html/da/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/da/tethering_wifi_help.html b/assets/html/da/tethering_wifi_help.html
index bdab832..8c5063b 100644
--- a/assets/html/da/tethering_wifi_help.html
+++ b/assets/html/da/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/de/tethering_help.html b/assets/html/de/tethering_help.html
index 0a060d5..317e176 100644
--- a/assets/html/de/tethering_help.html
+++ b/assets/html/de/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/de/tethering_usb_help.html b/assets/html/de/tethering_usb_help.html
index 7a2927e..8bad77d 100644
--- a/assets/html/de/tethering_usb_help.html
+++ b/assets/html/de/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/de/tethering_wifi_help.html b/assets/html/de/tethering_wifi_help.html
index 89e668d..a708766 100644
--- a/assets/html/de/tethering_wifi_help.html
+++ b/assets/html/de/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/el/tethering_help.html b/assets/html/el/tethering_help.html
index d5aefec..eae22eb 100644
--- a/assets/html/el/tethering_help.html
+++ b/assets/html/el/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/el/tethering_usb_help.html b/assets/html/el/tethering_usb_help.html
index cbc3af6..96ea2c8 100644
--- a/assets/html/el/tethering_usb_help.html
+++ b/assets/html/el/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/el/tethering_wifi_help.html b/assets/html/el/tethering_wifi_help.html
index 530a185..8507748 100644
--- a/assets/html/el/tethering_wifi_help.html
+++ b/assets/html/el/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/en_gb/tethering_help.html b/assets/html/en_gb/tethering_help.html
index 8d0bf77..63fec31 100644
--- a/assets/html/en_gb/tethering_help.html
+++ b/assets/html/en_gb/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/en_gb/tethering_usb_help.html b/assets/html/en_gb/tethering_usb_help.html
index 5c5e931..50e2154 100644
--- a/assets/html/en_gb/tethering_usb_help.html
+++ b/assets/html/en_gb/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/en_gb/tethering_wifi_help.html b/assets/html/en_gb/tethering_wifi_help.html
index 53faefb..3e8c1af 100644
--- a/assets/html/en_gb/tethering_wifi_help.html
+++ b/assets/html/en_gb/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/en_us/tethering_help.html b/assets/html/en_us/tethering_help.html
index 7f0445d..fa827d5 100644
--- a/assets/html/en_us/tethering_help.html
+++ b/assets/html/en_us/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html>
 <head>
 <style>
diff --git a/assets/html/en_us/tethering_usb_help.html b/assets/html/en_us/tethering_usb_help.html
index d1d27ff..23f39e5 100644
--- a/assets/html/en_us/tethering_usb_help.html
+++ b/assets/html/en_us/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html>
 <head>
 <style>
diff --git a/assets/html/en_us/tethering_wifi_help.html b/assets/html/en_us/tethering_wifi_help.html
index 383fa68..cd8398d14 100644
--- a/assets/html/en_us/tethering_wifi_help.html
+++ b/assets/html/en_us/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html>
 <head>
 <style>
diff --git a/assets/html/es/tethering_help.html b/assets/html/es/tethering_help.html
index 91c75b5..35a1e16 100644
--- a/assets/html/es/tethering_help.html
+++ b/assets/html/es/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/es/tethering_usb_help.html b/assets/html/es/tethering_usb_help.html
index f26f9a0..ec7a746 100644
--- a/assets/html/es/tethering_usb_help.html
+++ b/assets/html/es/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/es/tethering_wifi_help.html b/assets/html/es/tethering_wifi_help.html
index 11c8571..0761735 100644
--- a/assets/html/es/tethering_wifi_help.html
+++ b/assets/html/es/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/es_us/tethering_help.html b/assets/html/es_us/tethering_help.html
index 30dd509..f3055a0 100644
--- a/assets/html/es_us/tethering_help.html
+++ b/assets/html/es_us/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/es_us/tethering_usb_help.html b/assets/html/es_us/tethering_usb_help.html
index 0d29e82..b29b8a9 100644
--- a/assets/html/es_us/tethering_usb_help.html
+++ b/assets/html/es_us/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/es_us/tethering_wifi_help.html b/assets/html/es_us/tethering_wifi_help.html
index ed9a55f..ae08093 100644
--- a/assets/html/es_us/tethering_wifi_help.html
+++ b/assets/html/es_us/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/fr/tethering_help.html b/assets/html/fr/tethering_help.html
index 120bf1b..7356067 100644
--- a/assets/html/fr/tethering_help.html
+++ b/assets/html/fr/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/fr/tethering_usb_help.html b/assets/html/fr/tethering_usb_help.html
index 3187b4b..2000bcc 100644
--- a/assets/html/fr/tethering_usb_help.html
+++ b/assets/html/fr/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/fr/tethering_wifi_help.html b/assets/html/fr/tethering_wifi_help.html
index 4e4296a..4fab911 100644
--- a/assets/html/fr/tethering_wifi_help.html
+++ b/assets/html/fr/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/it/tethering_help.html b/assets/html/it/tethering_help.html
index 9ef9219..7434bb8 100644
--- a/assets/html/it/tethering_help.html
+++ b/assets/html/it/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/it/tethering_usb_help.html b/assets/html/it/tethering_usb_help.html
index 01ede7e..fcd7a03 100644
--- a/assets/html/it/tethering_usb_help.html
+++ b/assets/html/it/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/it/tethering_wifi_help.html b/assets/html/it/tethering_wifi_help.html
index a8dc40d..d53b07f 100644
--- a/assets/html/it/tethering_wifi_help.html
+++ b/assets/html/it/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/ja/tethering_help.html b/assets/html/ja/tethering_help.html
index ce3534c..4fd6065 100644
--- a/assets/html/ja/tethering_help.html
+++ b/assets/html/ja/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/ja/tethering_usb_help.html b/assets/html/ja/tethering_usb_help.html
index 16c6607..9bd95e6 100644
--- a/assets/html/ja/tethering_usb_help.html
+++ b/assets/html/ja/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/ja/tethering_wifi_help.html b/assets/html/ja/tethering_wifi_help.html
index b7ce376..d6c2a9a 100644
--- a/assets/html/ja/tethering_wifi_help.html
+++ b/assets/html/ja/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/ko/tethering_help.html b/assets/html/ko/tethering_help.html
index 8fb0050..0239f68 100644
--- a/assets/html/ko/tethering_help.html
+++ b/assets/html/ko/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/ko/tethering_usb_help.html b/assets/html/ko/tethering_usb_help.html
index bdd40a9..66ac3de 100644
--- a/assets/html/ko/tethering_usb_help.html
+++ b/assets/html/ko/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/ko/tethering_wifi_help.html b/assets/html/ko/tethering_wifi_help.html
index a63e9fa..b51b93e 100644
--- a/assets/html/ko/tethering_wifi_help.html
+++ b/assets/html/ko/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/nl/tethering_help.html b/assets/html/nl/tethering_help.html
index fd7a49d..febd1af 100644
--- a/assets/html/nl/tethering_help.html
+++ b/assets/html/nl/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/nl/tethering_usb_help.html b/assets/html/nl/tethering_usb_help.html
index c78ae56..fc027da 100644
--- a/assets/html/nl/tethering_usb_help.html
+++ b/assets/html/nl/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/nl/tethering_wifi_help.html b/assets/html/nl/tethering_wifi_help.html
index 3ae30b8..13f0fa0 100644
--- a/assets/html/nl/tethering_wifi_help.html
+++ b/assets/html/nl/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/no/tethering_help.html b/assets/html/no/tethering_help.html
index c493b8b..2883592 100644
--- a/assets/html/no/tethering_help.html
+++ b/assets/html/no/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/no/tethering_usb_help.html b/assets/html/no/tethering_usb_help.html
index f0f3461..e32c8b2 100644
--- a/assets/html/no/tethering_usb_help.html
+++ b/assets/html/no/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/no/tethering_wifi_help.html b/assets/html/no/tethering_wifi_help.html
index 6caa7a3..84e5910 100644
--- a/assets/html/no/tethering_wifi_help.html
+++ b/assets/html/no/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/pl/tethering_help.html b/assets/html/pl/tethering_help.html
index ffd6a6d..271f92f 100644
--- a/assets/html/pl/tethering_help.html
+++ b/assets/html/pl/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/pl/tethering_usb_help.html b/assets/html/pl/tethering_usb_help.html
index d365dc9..67d343c 100644
--- a/assets/html/pl/tethering_usb_help.html
+++ b/assets/html/pl/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/pl/tethering_wifi_help.html b/assets/html/pl/tethering_wifi_help.html
index 8f1cb07..50a66a7 100644
--- a/assets/html/pl/tethering_wifi_help.html
+++ b/assets/html/pl/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/pt_br/tethering_help.html b/assets/html/pt_br/tethering_help.html
index cbe7706..00c4251 100644
--- a/assets/html/pt_br/tethering_help.html
+++ b/assets/html/pt_br/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/pt_br/tethering_usb_help.html b/assets/html/pt_br/tethering_usb_help.html
index 2d6245d..8db1cc2 100644
--- a/assets/html/pt_br/tethering_usb_help.html
+++ b/assets/html/pt_br/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/pt_br/tethering_wifi_help.html b/assets/html/pt_br/tethering_wifi_help.html
index 3ea2ef5..88ca44f 100644
--- a/assets/html/pt_br/tethering_wifi_help.html
+++ b/assets/html/pt_br/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/pt_pt/tethering_help.html b/assets/html/pt_pt/tethering_help.html
index 613f108..ecf9c65 100644
--- a/assets/html/pt_pt/tethering_help.html
+++ b/assets/html/pt_pt/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/pt_pt/tethering_usb_help.html b/assets/html/pt_pt/tethering_usb_help.html
index 737d4d5..8cfab8c 100644
--- a/assets/html/pt_pt/tethering_usb_help.html
+++ b/assets/html/pt_pt/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/pt_pt/tethering_wifi_help.html b/assets/html/pt_pt/tethering_wifi_help.html
index 67224cf..c214ae0 100644
--- a/assets/html/pt_pt/tethering_wifi_help.html
+++ b/assets/html/pt_pt/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/ru/tethering_help.html b/assets/html/ru/tethering_help.html
index 016ec05..e09e428 100644
--- a/assets/html/ru/tethering_help.html
+++ b/assets/html/ru/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/ru/tethering_usb_help.html b/assets/html/ru/tethering_usb_help.html
index 0b01cbe..570b88b 100644
--- a/assets/html/ru/tethering_usb_help.html
+++ b/assets/html/ru/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/ru/tethering_wifi_help.html b/assets/html/ru/tethering_wifi_help.html
index 8073fb8..6fcca62 100644
--- a/assets/html/ru/tethering_wifi_help.html
+++ b/assets/html/ru/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/sv/tethering_help.html b/assets/html/sv/tethering_help.html
index e37df43..2242e98 100644
--- a/assets/html/sv/tethering_help.html
+++ b/assets/html/sv/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/sv/tethering_usb_help.html b/assets/html/sv/tethering_usb_help.html
index b0fed28..a16ec51 100644
--- a/assets/html/sv/tethering_usb_help.html
+++ b/assets/html/sv/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/sv/tethering_wifi_help.html b/assets/html/sv/tethering_wifi_help.html
index 7206240..cfffe4d 100644
--- a/assets/html/sv/tethering_wifi_help.html
+++ b/assets/html/sv/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/tr/tethering_help.html b/assets/html/tr/tethering_help.html
index 5bad024..cb59618 100644
--- a/assets/html/tr/tethering_help.html
+++ b/assets/html/tr/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/tr/tethering_usb_help.html b/assets/html/tr/tethering_usb_help.html
index e0a0668..9b01ff9 100644
--- a/assets/html/tr/tethering_usb_help.html
+++ b/assets/html/tr/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/tr/tethering_wifi_help.html b/assets/html/tr/tethering_wifi_help.html
index fab92bc..60f8206 100644
--- a/assets/html/tr/tethering_wifi_help.html
+++ b/assets/html/tr/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/zh_cn/tethering_help.html b/assets/html/zh_cn/tethering_help.html
index c360db8..0513eb7 100644
--- a/assets/html/zh_cn/tethering_help.html
+++ b/assets/html/zh_cn/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/zh_cn/tethering_usb_help.html b/assets/html/zh_cn/tethering_usb_help.html
index f05fc2a..adb3769 100644
--- a/assets/html/zh_cn/tethering_usb_help.html
+++ b/assets/html/zh_cn/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/zh_cn/tethering_wifi_help.html b/assets/html/zh_cn/tethering_wifi_help.html
index a6aa0b5..32a8792 100644
--- a/assets/html/zh_cn/tethering_wifi_help.html
+++ b/assets/html/zh_cn/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/zh_tw/tethering_help.html b/assets/html/zh_tw/tethering_help.html
index 20128c7..15f69c0 100644
--- a/assets/html/zh_tw/tethering_help.html
+++ b/assets/html/zh_tw/tethering_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/zh_tw/tethering_usb_help.html b/assets/html/zh_tw/tethering_usb_help.html
index 8152f99..f1a20df 100644
--- a/assets/html/zh_tw/tethering_usb_help.html
+++ b/assets/html/zh_tw/tethering_usb_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>
diff --git a/assets/html/zh_tw/tethering_wifi_help.html b/assets/html/zh_tw/tethering_wifi_help.html
index 39ade78..f91b151 100644
--- a/assets/html/zh_tw/tethering_wifi_help.html
+++ b/assets/html/zh_tw/tethering_wifi_help.html
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <html DIR="LTR">
 <head>
 <style>