diff --git a/Makefile b/Makefile
index 1f57ba4..9914d97 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=luci-app-kcptun
-PKG_VERSION:=1.4.1
+PKG_VERSION:=1.4.2
 PKG_RELEASE:=1
 
 PKG_LICENSE:=Apache-2.0
diff --git a/luasrc/model/cbi/kcptun/settings.lua b/luasrc/model/cbi/kcptun/settings.lua
index 38e9038..5afac2b 100644
--- a/luasrc/model/cbi/kcptun/settings.lua
+++ b/luasrc/model/cbi/kcptun/settings.lua
@@ -98,7 +98,7 @@ o.placeholder = translate("Check Kcptun")
 o.btnclick = "check_update('kcptun', this);"
 
 o = s:option(Button, "_check_luci", translate("Check Luci"),
-	translate("You need to reload current page after update luci. Note that translation will not be updated."))
+	translate("You may need to reload current page after update luci. Note that translation will not be updated."))
 o.template = "kcptun/button"
 o.inputstyle = "apply"
 o.placeholder = translate("Check Luci")
diff --git a/luasrc/model/kcptun.lua b/luasrc/model/kcptun.lua
index 7e3d422..b16037e 100644
--- a/luasrc/model/kcptun.lua
+++ b/luasrc/model/kcptun.lua
@@ -317,7 +317,7 @@ function download_kcptun(url)
 
 	sys.call("/bin/rm -f /tmp/kcptun_download.*")
 
-	local tmp_file = util.trim(util.exec("mktemp -u kcptun_download.XXXXXX"))
+	local tmp_file = util.trim(util.exec("mktemp -u -t kcptun_download.XXXXXX"))
 
 	local result = exec(wget, {
 		"-O", tmp_file, url, _unpack(wget_args) }, nil, wget_time_out) == 0
@@ -441,9 +441,9 @@ function update_luci(url)
 		}
 	end
 
-	sys.call("/bin/rm -f /tmp/luci_kcptun.*")
+	sys.call("/bin/rm -f /tmp/luci_kcptun.*.ipk")
 
-	local tmp_file = util.trim(util.exec("mktemp -u luci_kcptun.XXXXXX"))
+	local tmp_file = util.trim(util.exec("mktemp -u -t luci_kcptun.XXXXXX")) .. ".ipk"
 
 	local result = exec("/usr/bin/wget", {
 		"-O", tmp_file, url, _unpack(wget_args) }, nil, wget_time_out) == 0
@@ -456,7 +456,7 @@ function update_luci(url)
 		}
 	end
 
-	result = exec("opkg", {
+	result = exec("/bin/opkg", {
 		"install", "--force-reinstall", "--force-overwrite", tmp_file }) == 0
 
 	if not result then
diff --git a/luasrc/view/kcptun/status.htm b/luasrc/view/kcptun/status.htm
index d0585f8..97c055e 100644
--- a/luasrc/view/kcptun/status.htm
+++ b/luasrc/view/kcptun/status.htm
@@ -55,7 +55,7 @@
 		}
 	}
 
-	function on_request_success(btn) {
+	function on_update_success(btn) {
 		add_remove_page_notice(false);
 
 		var success = '<%:Update Success.%>';
@@ -189,7 +189,7 @@
 								}, function (x, res) {
 									if (x && x.status == 200) {
 										if (json.code == 0) {
-											on_request_success(btn);
+											on_update_success(btn);
 										} else {
 											on_request_error(btn, json);
 										}
@@ -213,7 +213,7 @@
 		});
 	}
 
-	function do_luci_update(type, btn) {
+	function do_luci_update(btn) {
 		btn.disabled = true;
 		btn.value = '<%:Processing...%>';
 
@@ -223,13 +223,13 @@
 
 		(new XHR()).get(luci_update_url, {
 			token: token_str,
-			url: luci_info ? luci_info.url.download : ''
+			url: luci_info ? luci_info.url.luci : ''
 		}, function(x, json) {
 				btn.disabled = false;
 				btn.value = btn.placeholder;
 				if (x && x.status == 200) {
 					if (json.code == 0) {
-						on_request_success(btn);
+						on_update_success(btn);
 					} else {
 						on_request_error(btn, json);
 					}
diff --git a/po/templates/kcptun.pot b/po/templates/kcptun.pot
index 7acb201..ba76b45 100644
--- a/po/templates/kcptun.pot
+++ b/po/templates/kcptun.pot
@@ -272,7 +272,7 @@ msgid "Update in progress. Are you sure to close window?"
 msgstr ""
 
 msgid ""
-"You need to reload current page after update luci. Note that translation "
+"You may need to reload current page after update luci. Note that translation "
 "will not be updated."
 msgstr ""
 
diff --git a/po/zh-cn/kcptun.po b/po/zh-cn/kcptun.po
index 179f936..45f1822 100644
--- a/po/zh-cn/kcptun.po
+++ b/po/zh-cn/kcptun.po
@@ -274,9 +274,9 @@ msgid "Update in progress. Are you sure to close window?"
 msgstr "正在更新，确定关闭窗口？"
 
 msgid ""
-"You need to reload current page after update luci. Note that translation "
+"You may need to reload current page after update luci. Note that translation "
 "will not be updated."
-msgstr "更新 luci 之后你需要手动刷新当前页面。注意：翻译不会被更新"
+msgstr "更新 luci 之后你可能需要手动刷新当前页面。注意：翻译不会被更新"
 
 msgid "acknodelay"
 msgstr ""