diff --git a/app/src/main/res/values-ca/strings.xml b/app/src/main/res/values-ca/strings.xml
index 54606f5e6..f4b076053 100644
--- a/app/src/main/res/values-ca/strings.xml
+++ b/app/src/main/res/values-ca/strings.xml
@@ -349,4 +349,6 @@ Tingueu compte amb aplicacions baixades des de dipòsits sense empremta digital.
 
     <string name="downloading_apk">Descarregant %1$s</string>
 
+    <string name="system_install_not_supported">No es pot instal·lar F-Droid Privileged Extension actualment actualment en versions d\'Android 5.1 o posteriors.</string>
+
     </resources>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 25778cca8..a8e489990 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -6,7 +6,7 @@
   <string name="version">Version</string>
   <string name="delete">Löschen</string>
   <string name="enable_nfc_send">NFC-Transfer aktivieren …</string>
-  <string name="cache_downloaded">Pakete zwischenspeichern</string>
+  <string name="cache_downloaded">Zwischengespeicherte Apps behalten</string>
   <string name="cache_downloaded_on">Heruntergeladene Programmpakete auf dem Gerät behalten</string>
   <string name="updates">Aktualisierungen</string>
   <string name="other">Andere</string>
@@ -347,4 +347,9 @@
 
     <string name="downloading_apk">%1$s wird heruntergeladen</string>
 
+    <string name="keep_hour">1 Stunde</string>
+    <string name="keep_day">1 Tag</string>
+    <string name="keep_week">1 Woche</string>
+    <string name="keep_month">1 Monat</string>
+    <string name="keep_year">1 Jahr</string>
     </resources>
diff --git a/app/src/main/res/values-eo/strings.xml b/app/src/main/res/values-eo/strings.xml
index f0842b47f..593d82a2a 100644
--- a/app/src/main/res/values-eo/strings.xml
+++ b/app/src/main/res/values-eo/strings.xml
@@ -349,4 +349,6 @@
 
     <string name="downloading_apk">Elŝutanta na %1$s</string>
 
+    <string name="system_install_not_supported">Instalado de Privilegia F-Droid-aldonaĵo ne estas nuntempe subtenata en Android 5.1 aŭ posta.</string>
+
     </resources>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index 79de9af20..b2edea416 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -354,4 +354,6 @@ Deberías tener cuidado con aplicaciones descargadas desde índices no firmados.
 
     <string name="downloading_apk">Descargando %1$s</string>
 
+    <string name="system_install_not_supported">La instalación de la extensión con permisos de sistema de F-Droid no está actualmente disponible para Android 5.1 o superiores.</string>
+
     </resources>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 149ad7179..e1e425bab 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -6,8 +6,8 @@
   <string name="version">ﾊﾞｰｼﾞｮﾝ</string>
   <string name="delete">削除</string>
   <string name="enable_nfc_send">NFC 送信を有効…</string>
-  <string name="cache_downloaded">ﾊﾟｯｹｰｼﾞのｷｬｯｼｭ</string>
-  <string name="cache_downloaded_on">ﾀﾞｳﾝﾛｰﾄﾞしたﾊﾟｯｹｰｼﾞ ﾌｧｲﾙを端末に残します</string>
+  <string name="cache_downloaded">ｷｬｯｼｭしたｱﾌﾟﾘを残す</string>
+  <string name="cache_downloaded_on">ﾀﾞｳﾝﾛｰﾄﾞしたAPKﾌｧｲﾙを端末に残します</string>
   <string name="updates">更新</string>
   <string name="other">その他</string>
   <string name="update_interval">自動更新間隔</string>
@@ -350,4 +350,13 @@
 
     <string name="downloading_apk">%1$s のﾀﾞｳﾝﾛｰﾄﾞ中</string>
 
+    <string name="system_install_not_supported">F-Droidの特権拡張のｲﾝｽﾄｰﾙは、現在Android 5.1以降でｻﾎﾟｰﾄされていません。</string>
+
+    <string name="keep_hour">1時間</string>
+    <string name="keep_day">1日</string>
+    <string name="keep_week">1週間</string>
+    <string name="keep_month">1ヶ月</string>
+    <string name="keep_year">1年間</string>
+    <string name="keep_forever">永久</string>
+
     </resources>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 1c3f87d4b..710488eef 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -351,4 +351,6 @@ Uwaga: Wszystkie poprzednio zainstalowane aplikacje zostaną na urządzeniu.</st
 
     <string name="downloading_apk">Pobieranie %1$s</string>
 
+    <string name="system_install_not_supported">Instalacja Uprzywilejowanego Dodatku F-Droid nie jest obecnie wspierana na Androidzie 5.1 i nowszych.</string>
+
     </resources>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index c05a39c1b..f9edf66c3 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -350,4 +350,6 @@ com aplicativos baixados a partir de índices não assinados.</string>
 
     <string name="downloading_apk">Baixando %1$s</string>
 
+    <string name="system_install_not_supported">A instalação da Extensão Privilegiada do F-Droid atualmente não é suportada no Android 5.1 ou posterior.</string>
+
     </resources>
diff --git a/app/src/main/res/values-sr/strings.xml b/app/src/main/res/values-sr/strings.xml
index de8b13809..6b390b066 100644
--- a/app/src/main/res/values-sr/strings.xml
+++ b/app/src/main/res/values-sr/strings.xml
@@ -6,8 +6,8 @@
   <string name="version">Издање</string>
   <string name="delete">Обриши</string>
   <string name="enable_nfc_send">Омогући слање преко НФЦ-а…</string>
-  <string name="cache_downloaded">Складишти пакете</string>
-  <string name="cache_downloaded_on">Чувај преузете пакете на уређају</string>
+  <string name="cache_downloaded">Чувај кеширане апликације</string>
+  <string name="cache_downloaded_on">Чувај преузете АПК фајлове на уређају</string>
   <string name="updates">Надоградње</string>
   <string name="other">Остало</string>
   <string name="update_interval">Међувреме самосталног освежавања</string>
@@ -347,4 +347,13 @@
 
     <string name="downloading_apk">Преузимам %1$s</string>
 
+    <string name="system_install_not_supported">Инсталирање Повлашћеног проширење за Ф-дроид тренутно није подржано на Андроиду 5.1 и новијем.</string>
+
+    <string name="keep_hour">1 сат</string>
+    <string name="keep_day">1 дан</string>
+    <string name="keep_week">1 седмицу</string>
+    <string name="keep_month">1 месец</string>
+    <string name="keep_year">1 годину</string>
+    <string name="keep_forever">заувек</string>
+
     </resources>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 4d91bcd24..67ba9bf3b 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -6,8 +6,8 @@
   <string name="version">版本</string>
   <string name="delete">删除</string>
   <string name="enable_nfc_send">启用NFC发送…</string>
-  <string name="cache_downloaded">缓存安装包</string>
-  <string name="cache_downloaded_on">在本地保留已下载的安装包</string>
+  <string name="cache_downloaded">保留应用安装包</string>
+  <string name="cache_downloaded_on">在设备上保留已下载的 APK 文件</string>
   <string name="updates">升级</string>
   <string name="other">其它</string>
   <string name="update_interval">自动更新周期</string>
@@ -350,4 +350,13 @@
 
     <string name="downloading_apk">正在下载 %1$s</string>
 
+    <string name="system_install_not_supported">F-Droid 特权扩展目前不支持安装在 Android 5.1 或更高版本上。</string>
+
+    <string name="keep_hour">1小时</string>
+    <string name="keep_day">1天</string>
+    <string name="keep_week">1周</string>
+    <string name="keep_month">1个月</string>
+    <string name="keep_year">1年</string>
+    <string name="keep_forever">永远</string>
+
     </resources>