diff --git a/HISTORY.md b/HISTORY.md
index 4443aeac..d3bafa41 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,9 @@
 ## 更新日志
 
+### v2.0.5
+
+* 设置页增加恢复默认按钮，目前只用于同步系统时间
+
 ### v2.0.4
 
 * 修复不能播放的问题
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index f8ede284..2fe04640 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -15,7 +15,7 @@
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
 
     <application
-        android:name=".MyTvApplication"
+        android:name=".MyTVApplication"
         android:allowBackup="true"
         android:banner="@drawable/banner"
         android:icon="@drawable/logo"
diff --git a/app/src/main/java/com/lizongying/mytv/CardAdapter.kt b/app/src/main/java/com/lizongying/mytv/CardAdapter.kt
index 9081cb00..5d3a71e2 100644
--- a/app/src/main/java/com/lizongying/mytv/CardAdapter.kt
+++ b/app/src/main/java/com/lizongying/mytv/CardAdapter.kt
@@ -34,7 +34,7 @@ class CardAdapter(
         val inflater = LayoutInflater.from(parent.context)
         val binding = CardBinding.inflate(inflater, parent, false)
 
-        val application = mainFragment.requireActivity().applicationContext as MyTvApplication
+        val application = mainFragment.requireActivity().applicationContext as MyTVApplication
 
         binding.card.layoutParams.width = application.px2Px(binding.card.layoutParams.width)
         binding.card.layoutParams.height = application.px2Px(binding.card.layoutParams.height)
diff --git a/app/src/main/java/com/lizongying/mytv/ChannelFragment.kt b/app/src/main/java/com/lizongying/mytv/ChannelFragment.kt
index 602e8e9a..3ab60061 100644
--- a/app/src/main/java/com/lizongying/mytv/ChannelFragment.kt
+++ b/app/src/main/java/com/lizongying/mytv/ChannelFragment.kt
@@ -28,7 +28,7 @@ class ChannelFragment : Fragment() {
         _binding = ChannelBinding.inflate(inflater, container, false)
         _binding!!.root.visibility = View.GONE
 
-        val application = requireActivity().applicationContext as MyTvApplication
+        val application = requireActivity().applicationContext as MyTVApplication
 
         binding.channel.layoutParams.width = application.px2Px(binding.channel.layoutParams.width)
         binding.channel.layoutParams.height = application.px2Px(binding.channel.layoutParams.height)
diff --git a/app/src/main/java/com/lizongying/mytv/ErrorFragment.kt b/app/src/main/java/com/lizongying/mytv/ErrorFragment.kt
index d569e6dc..28eb63f1 100644
--- a/app/src/main/java/com/lizongying/mytv/ErrorFragment.kt
+++ b/app/src/main/java/com/lizongying/mytv/ErrorFragment.kt
@@ -19,7 +19,7 @@ class ErrorFragment : Fragment() {
     ): View {
         _binding = ErrorBinding.inflate(inflater, container, false)
 
-        val application = requireActivity().applicationContext as MyTvApplication
+        val application = requireActivity().applicationContext as MyTVApplication
 
         binding.logo.layoutParams.width = application.px2Px(binding.logo.layoutParams.width)
         binding.logo.layoutParams.height = application.px2Px(binding.logo.layoutParams.height)
diff --git a/app/src/main/java/com/lizongying/mytv/InfoFragment.kt b/app/src/main/java/com/lizongying/mytv/InfoFragment.kt
index f3698256..b69be706 100644
--- a/app/src/main/java/com/lizongying/mytv/InfoFragment.kt
+++ b/app/src/main/java/com/lizongying/mytv/InfoFragment.kt
@@ -29,7 +29,7 @@ class InfoFragment : Fragment() {
     ): View {
         _binding = InfoBinding.inflate(inflater, container, false)
 
-        val application = requireActivity().applicationContext as MyTvApplication
+        val application = requireActivity().applicationContext as MyTVApplication
 
         binding.info.layoutParams.width = application.px2Px(binding.info.layoutParams.width)
         binding.info.layoutParams.height = application.px2Px(binding.info.layoutParams.height)
diff --git a/app/src/main/java/com/lizongying/mytv/ItemDecoration.kt b/app/src/main/java/com/lizongying/mytv/ItemDecoration.kt
index 68e7df53..ad761dcb 100644
--- a/app/src/main/java/com/lizongying/mytv/ItemDecoration.kt
+++ b/app/src/main/java/com/lizongying/mytv/ItemDecoration.kt
@@ -7,10 +7,10 @@ import androidx.recyclerview.widget.RecyclerView
 
 class ItemDecoration(context: Context) : RecyclerView.ItemDecoration() {
 
-    private var application: MyTvApplication
+    private var application: MyTVApplication
 
     init {
-        application = context.applicationContext as MyTvApplication
+        application = context.applicationContext as MyTVApplication
     }
 
     override fun getItemOffsets(
diff --git a/app/src/main/java/com/lizongying/mytv/LoadingFragment.kt b/app/src/main/java/com/lizongying/mytv/LoadingFragment.kt
index 11420947..635b566b 100644
--- a/app/src/main/java/com/lizongying/mytv/LoadingFragment.kt
+++ b/app/src/main/java/com/lizongying/mytv/LoadingFragment.kt
@@ -17,7 +17,7 @@ class LoadingFragment : Fragment() {
     ): View {
         _binding = LoadingBinding.inflate(inflater, container, false)
 
-        val application = requireActivity().applicationContext as MyTvApplication
+        val application = requireActivity().applicationContext as MyTVApplication
 
         binding.bar.layoutParams.width = application.px2Px(binding.bar.layoutParams.width)
         binding.bar.layoutParams.height = application.px2Px(binding.bar.layoutParams.height)
diff --git a/app/src/main/java/com/lizongying/mytv/MainActivity.kt b/app/src/main/java/com/lizongying/mytv/MainActivity.kt
index 2312b5f9..82af35e3 100644
--- a/app/src/main/java/com/lizongying/mytv/MainActivity.kt
+++ b/app/src/main/java/com/lizongying/mytv/MainActivity.kt
@@ -8,6 +8,7 @@ import android.util.Log
 import android.view.GestureDetector
 import android.view.KeyEvent
 import android.view.MotionEvent
+import android.view.View
 import android.view.View.SYSTEM_UI_FLAG_FULLSCREEN
 import android.view.View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
 import android.view.View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
@@ -50,7 +51,7 @@ class MainActivity : FragmentActivity(), Request.RequestListener, OnSharedPrefer
         Utils.setRequestListener(this)
     }
 
-    private fun syncTime() {
+    fun syncTime() {
         lifecycleScope.launch(Dispatchers.IO) {
             val utilsJob = async(start = CoroutineStart.LAZY) { Utils.init() }
             utilsJob.start()
@@ -59,9 +60,6 @@ class MainActivity : FragmentActivity(), Request.RequestListener, OnSharedPrefer
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
-
-        Request.setRequestListener(this)
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
             val lp = window.attributes
@@ -70,6 +68,17 @@ class MainActivity : FragmentActivity(), Request.RequestListener, OnSharedPrefer
             window.setAttributes(lp)
         }
 
+
+        window.decorView.apply {
+            systemUiVisibility =
+                SYSTEM_UI_FLAG_FULLSCREEN or
+                        SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or
+                        View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
+                        SYSTEM_UI_FLAG_HIDE_NAVIGATION or
+                        SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
+                        View.SYSTEM_UI_FLAG_IMMERSIVE
+        }
+
         window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
         window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN)
         window.decorView.systemUiVisibility =
@@ -82,6 +91,10 @@ class MainActivity : FragmentActivity(), Request.RequestListener, OnSharedPrefer
 //            window.navigationBarColor = Color.TRANSPARENT
 //        }
 
+        setContentView(R.layout.activity_main)
+
+        Request.setRequestListener(this)
+
         if (savedInstanceState == null) {
             val transaction = supportFragmentManager.beginTransaction()
                 .add(R.id.main_browse_fragment, playerFragment)
diff --git a/app/src/main/java/com/lizongying/mytv/MainFragment.kt b/app/src/main/java/com/lizongying/mytv/MainFragment.kt
index f9835e0d..e789e0b3 100644
--- a/app/src/main/java/com/lizongying/mytv/MainFragment.kt
+++ b/app/src/main/java/com/lizongying/mytv/MainFragment.kt
@@ -42,7 +42,7 @@ class MainFragment : Fragment(), CardAdapter.ItemListener {
 
     private var lastVideoUrl = ""
 
-    private lateinit var application: MyTvApplication
+    private lateinit var application: MyTVApplication
 
     private lateinit var gestureDetector: GestureDetector
 
@@ -53,7 +53,7 @@ class MainFragment : Fragment(), CardAdapter.ItemListener {
         val context = requireContext()
         _binding = MenuBinding.inflate(inflater, container, false)
 
-        application = requireActivity().applicationContext as MyTvApplication
+        application = requireActivity().applicationContext as MyTVApplication
 
         binding.menu.layoutParams.width = application.shouldWidthPx()
         binding.menu.layoutParams.height = application.shouldHeightPx()
diff --git a/app/src/main/java/com/lizongying/mytv/MyTvApplication.kt b/app/src/main/java/com/lizongying/mytv/MyTVApplication.kt
similarity index 98%
rename from app/src/main/java/com/lizongying/mytv/MyTvApplication.kt
rename to app/src/main/java/com/lizongying/mytv/MyTVApplication.kt
index 7dc93dc7..4e82181b 100644
--- a/app/src/main/java/com/lizongying/mytv/MyTvApplication.kt
+++ b/app/src/main/java/com/lizongying/mytv/MyTVApplication.kt
@@ -8,7 +8,7 @@ import android.view.WindowManager
 import androidx.multidex.MultiDex
 
 
-class MyTvApplication : Application() {
+class MyTVApplication : Application() {
     private lateinit var displayMetrics: DisplayMetrics
     private lateinit var realDisplayMetrics: DisplayMetrics
 
diff --git a/app/src/main/java/com/lizongying/mytv/SettingFragment.kt b/app/src/main/java/com/lizongying/mytv/SettingFragment.kt
index ee425240..99618f97 100644
--- a/app/src/main/java/com/lizongying/mytv/SettingFragment.kt
+++ b/app/src/main/java/com/lizongying/mytv/SettingFragment.kt
@@ -14,6 +14,7 @@ import androidx.core.content.ContextCompat
 import androidx.core.view.marginEnd
 import androidx.core.view.marginTop
 import androidx.fragment.app.DialogFragment
+import com.lizongying.mytv.api.YSP
 import com.lizongying.mytv.databinding.SettingBinding
 
 
@@ -97,7 +98,14 @@ class SettingFragment : DialogFragment() {
             requestInstallPermissions()
         }
 
-        val application = requireActivity().applicationContext as MyTvApplication
+        binding.clear.setOnClickListener {
+            (requireActivity() as MainActivity).syncTime()
+            SP.guid = ""
+            YSP.getGuid()
+        }
+
+        val application = requireActivity().applicationContext as MyTVApplication
+        val textSize = application.px2PxFont(binding.switchChannelReversal.textSize)
 
         binding.content.layoutParams.width =
             application.px2Px(binding.content.layoutParams.width)
@@ -108,51 +116,41 @@ class SettingFragment : DialogFragment() {
             application.px2Px(binding.content.paddingBottom)
         )
         binding.name.textSize = application.px2PxFont(binding.name.textSize)
-        binding.version.textSize = application.px2PxFont(binding.version.textSize)
+        binding.version.textSize = textSize
         val layoutParamsVersion = binding.version.layoutParams as ViewGroup.MarginLayoutParams
         layoutParamsVersion.topMargin = application.px2Px(binding.version.marginTop)
         binding.version.layoutParams = layoutParamsVersion
 
-        binding.checkVersion.textSize = application.px2PxFont(binding.checkVersion.textSize)
+        binding.checkVersion.textSize = textSize
         val layoutParamsCheckVersion =
             binding.checkVersion.layoutParams as ViewGroup.MarginLayoutParams
         layoutParamsCheckVersion.marginEnd = application.px2Px(binding.checkVersion.marginEnd)
         binding.checkVersion.layoutParams = layoutParamsCheckVersion
 
-        binding.versionName.textSize = application.px2PxFont(binding.versionName.textSize)
+        binding.versionName.textSize = textSize
 
-        binding.exit.textSize = application.px2PxFont(binding.exit.textSize)
+        binding.clear.textSize = textSize
+        binding.exit.textSize = textSize
 
-        binding.switchChannelReversal.textSize =
-            application.px2PxFont(binding.switchChannelReversal.textSize)
-        val layoutParamsChannelReversal =
+        val layoutParamsChannelSwitch =
             binding.switchChannelReversal.layoutParams as ViewGroup.MarginLayoutParams
-        layoutParamsChannelReversal.topMargin =
+        layoutParamsChannelSwitch.topMargin =
             application.px2Px(binding.switchChannelReversal.marginTop)
-        binding.switchChannelReversal.layoutParams = layoutParamsChannelReversal
-
-        binding.switchChannelNum.textSize = application.px2PxFont(binding.switchChannelNum.textSize)
-        val layoutParamsChannelNum =
-            binding.switchChannelNum.layoutParams as ViewGroup.MarginLayoutParams
-        layoutParamsChannelNum.topMargin = application.px2Px(binding.switchChannelNum.marginTop)
-        binding.switchChannelNum.layoutParams = layoutParamsChannelNum
-
-        binding.switchTime.textSize = application.px2PxFont(binding.switchTime.textSize)
-        val layoutParamsTime = binding.switchTime.layoutParams as ViewGroup.MarginLayoutParams
-        layoutParamsTime.topMargin = application.px2Px(binding.switchTime.marginTop)
-        binding.switchTime.layoutParams = layoutParamsTime
-
-        binding.switchBootStartup.textSize =
-            application.px2PxFont(binding.switchBootStartup.textSize)
-        val layoutParamsBootStartup =
-            binding.switchBootStartup.layoutParams as ViewGroup.MarginLayoutParams
-        layoutParamsBootStartup.topMargin = application.px2Px(binding.switchBootStartup.marginTop)
-        binding.switchBootStartup.layoutParams = layoutParamsBootStartup
-
-        binding.switchGrid.textSize = application.px2PxFont(binding.switchGrid.textSize)
-        val layoutParamsGrid = binding.switchGrid.layoutParams as ViewGroup.MarginLayoutParams
-        layoutParamsGrid.topMargin = application.px2Px(binding.switchGrid.marginTop)
-        binding.switchGrid.layoutParams = layoutParamsGrid
+
+        binding.switchChannelReversal.textSize = textSize
+        binding.switchChannelReversal.layoutParams = layoutParamsChannelSwitch
+
+        binding.switchChannelNum.textSize = textSize
+        binding.switchChannelNum.layoutParams = layoutParamsChannelSwitch
+
+        binding.switchTime.textSize = textSize
+        binding.switchTime.layoutParams = layoutParamsChannelSwitch
+
+        binding.switchBootStartup.textSize = textSize
+        binding.switchBootStartup.layoutParams = layoutParamsChannelSwitch
+
+        binding.switchGrid.textSize = textSize
+        binding.switchGrid.layoutParams = layoutParamsChannelSwitch
 
         binding.appreciate.layoutParams.width =
             application.px2Px(binding.appreciate.layoutParams.width)
diff --git a/app/src/main/java/com/lizongying/mytv/TimeFragment.kt b/app/src/main/java/com/lizongying/mytv/TimeFragment.kt
index 93738d23..d241df47 100644
--- a/app/src/main/java/com/lizongying/mytv/TimeFragment.kt
+++ b/app/src/main/java/com/lizongying/mytv/TimeFragment.kt
@@ -24,7 +24,7 @@ class TimeFragment : Fragment() {
     ): View {
         _binding = TimeBinding.inflate(inflater, container, false)
 
-        val application = requireActivity().applicationContext as MyTvApplication
+        val application = requireActivity().applicationContext as MyTVApplication
 
         binding.time.layoutParams.width = application.px2Px(binding.time.layoutParams.width)
         binding.time.layoutParams.height = application.px2Px(binding.time.layoutParams.height)
diff --git a/app/src/main/java/com/lizongying/mytv/api/YSP.kt b/app/src/main/java/com/lizongying/mytv/api/YSP.kt
index 71374860..876e67b7 100644
--- a/app/src/main/java/com/lizongying/mytv/api/YSP.kt
+++ b/app/src/main/java/com/lizongying/mytv/api/YSP.kt
@@ -1,7 +1,6 @@
 package com.lizongying.mytv.api
 
 import android.content.Context
-import android.util.Log
 import com.lizongying.mytv.SP
 import com.lizongying.mytv.Utils.getDateTimestamp
 import com.lizongying.mytv.models.TVViewModel
@@ -103,18 +102,18 @@ object YSP {
         cKey =
             encryptor.encrypt(cnlid, timeStr, appVer, guid, platform)
 
-        Log.i(TAG,"yspsdkinput ${"""{"cnlid":"$cnlid","livepid":"$livepid","stream":"$stream","guid":"$guid","cKey":"$cKey","adjust":$adjust,"sphttps":"$sphttps","platform":"$platform","cmd":"$cmd","encryptVer":"$encryptVer","dtype":"$dtype","devid":"$devid","otype":"$otype","appVer":"$appVer","app_version":"$appVersion","channel":"$channel","defn":"$defn"}"""}" )
-
-        yspsdkinput = md("adjust=$adjust&app_version=$appVersion&appVer=$appVer&channel=$channel&cKey=$cKey&cmd=$cmd&cnlid=$cnlid&defn=$defn&devid=$devid&dtype=$dtype&encryptVer=$encryptVer&guid=$guid&livepid=$livepid&otype=$otype&platform=$platform&sphttps=$sphttps&stream=$stream")
+        yspsdkinput =
+            md("adjust=$adjust&app_version=$appVersion&appVer=$appVer&channel=$channel&cKey=$cKey&cmd=$cmd&cnlid=$cnlid&defn=$defn&devid=$devid&dtype=$dtype&encryptVer=$encryptVer&guid=$guid&livepid=$livepid&otype=$otype&platform=$platform&sphttps=$sphttps&stream=$stream")
 
         nseqId++
 
-        nrequest_id =  "999999" + getRand() + getTimeStr()
+        nrequest_id = "999999" + getRand() + getTimeStr()
 
-        openapi_signature = md("yspappid:519748109;host:www.yangshipin.cn;protocol:https:;token:$token2;input:$yspsdkinput-$guid-$nseqId-$nrequest_id;")
+        openapi_signature =
+            md("yspappid:519748109;host:www.yangshipin.cn;protocol:https:;token:$token2;input:$yspsdkinput-$guid-$nseqId-$nrequest_id;")
     }
 
-    fun md(str:String):String {
+    fun md(str: String): String {
         val md = MessageDigest.getInstance("MD5")
         md.update(str.toByteArray())
         val digest = md.digest()
@@ -148,6 +147,7 @@ object YSP {
         var guid = SP.guid
         if (guid.length < 18) {
             guid = generateGuid()
+            this.guid = guid
             SP.guid = guid
         }
         return guid
diff --git a/app/src/main/java/com/lizongying/mytv/models/TVViewModel.kt b/app/src/main/java/com/lizongying/mytv/models/TVViewModel.kt
index 180e9489..d20082e0 100644
--- a/app/src/main/java/com/lizongying/mytv/models/TVViewModel.kt
+++ b/app/src/main/java/com/lizongying/mytv/models/TVViewModel.kt
@@ -15,7 +15,7 @@ class TVViewModel(private var tv: TV) : ViewModel() {
     private var itemPosition: Int = 0
 
     var retryTimes = 0
-    var retryMaxTimes = 1
+    var retryMaxTimes = 8
     var authYSPRetryTimes = 0
     var authYSPRetryMaxTimes = 3
     var tokenYSPRetryTimes = 0
diff --git a/app/src/main/res/layout/setting.xml b/app/src/main/res/layout/setting.xml
index f0a29910..ecfd4abe 100644
--- a/app/src/main/res/layout/setting.xml
+++ b/app/src/main/res/layout/setting.xml
@@ -55,6 +55,13 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content" />
             </LinearLayout>
+            <Button
+                android:id="@+id/clear"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="14sp"
+                android:text="@string/clear"
+                />
             <Button
                 android:id="@+id/exit"
                 android:layout_width="wrap_content"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index c03be020..9354632d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -6,5 +6,6 @@
     <string name="title_boot_startup">开机自启</string>
     <string name="title_grid">频道列表采用网格样式</string>
     <string name="title_time">显示时间</string>
+    <string name="clear">恢复默认</string>
     <string name="exit">退出应用</string>
 </resources>
\ No newline at end of file
diff --git a/version.json b/version.json
index e75da9b0..197c448e 100644
--- a/version.json
+++ b/version.json
@@ -1 +1 @@
-{"version_code": 33555456, "version_name": "v2.0.4"}
+{"version_code": 33555712, "version_name": "v2.0.5"}