diff --git a/apps/reader/base.de.i18n b/apps/reader/base.de.i18n
index 9cbb39897..873f577b1 100644
--- a/apps/reader/base.de.i18n
+++ b/apps/reader/base.de.i18n
@@ -1,5 +1,3 @@
 ReaderApp = "Leser"
 ReaderAppCapital = "LESER"
 NoFileToDisplay = "Keine Dateien zum Anzeigen"
-FileError1 = "Fehler beim Lesen der Datei"
-FileError2 = "Bitte überprüfen Sie die Syntax"
diff --git a/apps/reader/base.en.i18n b/apps/reader/base.en.i18n
index 2cb016526..812b213b8 100644
--- a/apps/reader/base.en.i18n
+++ b/apps/reader/base.en.i18n
@@ -1,5 +1,3 @@
 ReaderApp = "Reader"
 ReaderAppCapital = "READER"
 NoFileToDisplay = "No file to display"
-FileError1 = "Error while reading file"
-FileError2 = "Please check its syntax"
diff --git a/apps/reader/base.es.i18n b/apps/reader/base.es.i18n
index 76962dca3..674bec03e 100644
--- a/apps/reader/base.es.i18n
+++ b/apps/reader/base.es.i18n
@@ -1,5 +1,3 @@
 ReaderApp = "Lector"
 ReaderAppCapital = "LECTOR"
 NoFileToDisplay ="No hay archivos para mostrar"
-FileError1 = "Error al leer el archivo"
-FileError2 = "Por favor revise su sintaxis"
diff --git a/apps/reader/base.fr.i18n b/apps/reader/base.fr.i18n
index b74e6add0..e017f6bda 100644
--- a/apps/reader/base.fr.i18n
+++ b/apps/reader/base.fr.i18n
@@ -1,5 +1,3 @@
 ReaderApp = "Liseuse"
 ReaderAppCapital = "LISEUSE"
 NoFileToDisplay = "Aucun fichier à afficher"
-FileError1 = "Erreur durant la lecture du fichier"
-FileError2 = "Veuillez vérifier sa syntaxe"
\ No newline at end of file
diff --git a/apps/reader/base.hu.i18n b/apps/reader/base.hu.i18n
index 9580dc40a..d0595b0c6 100644
--- a/apps/reader/base.hu.i18n
+++ b/apps/reader/base.hu.i18n
@@ -1,5 +1,3 @@
 ReaderApp = "Olvasó"
 ReaderAppCapital = "OLVASÓ"
 NoFileToDisplay = "Nincs megjeleníthető fájl"
-FileError1 = "Hiba a fájl olvasása közben"
-FileError2 = "Kérjük, ellenőrizze a szintaxisát"
diff --git a/apps/reader/base.it.i18n b/apps/reader/base.it.i18n
index abfa80eda..98caf87b7 100644
--- a/apps/reader/base.it.i18n
+++ b/apps/reader/base.it.i18n
@@ -1,5 +1,3 @@
 ReaderApp = "Lettore"
 ReaderAppCapital = "LETTORE"
 NoFileToDisplay = "essun file da visualizzare"
-FileError1 = "Errore durante la lettura del file"
-FileError2 = "Si prega di controllare la sua sintassi"
diff --git a/apps/reader/base.nl.i18n b/apps/reader/base.nl.i18n
index 9f8c2304f..0e744c24c 100644
--- a/apps/reader/base.nl.i18n
+++ b/apps/reader/base.nl.i18n
@@ -1,5 +1,3 @@
 ReaderApp = "Lezer"
 ReaderAppCapital = "LEZER"
 NoFileToDisplay = "Geen bestanden om weer te geven"
-FileError1 = "Fout tijdens het lezen van bestand"
-FileError2 = "Controleer de syntaxis ervan"
diff --git a/apps/reader/base.pt.i18n b/apps/reader/base.pt.i18n
index 0c2281287..0be936522 100644
--- a/apps/reader/base.pt.i18n
+++ b/apps/reader/base.pt.i18n
@@ -1,5 +1,3 @@
 ReaderApp = "Leitor"
 ReaderAppCapital = "LEITOR"
 NoFileToDisplay = "Nenhum arquivo para exibir"
-FileError1 = "Erro ao ler o arquivo"
-FileError2 = "Verifique sua sintaxe"
diff --git a/apps/settings/base.de.i18n b/apps/settings/base.de.i18n
index 3eb0e59fb..8f8cd5898 100644
--- a/apps/settings/base.de.i18n
+++ b/apps/settings/base.de.i18n
@@ -72,14 +72,6 @@ Time = "Uhrzeit"
 RTCWarning1 = "Das Aktivieren der Uhr verkürzt die"
 RTCWarning2 = "Akkulaufzeit im Bereitschaftsmodus."
 SyntaxHighlighting = "Syntaxhervorhebung"
-USBExplanation1 = "USB-Schutz schützt Ihren"
-USBExplanation2 = "Taschenrechner vor"
-USBExplanation3 = "unbeabsichtigter Verriegelung"
-USBProtection = "USB-Schutz"
-USBProtectionLevel = "Akzeptierte Updates"
-USBDefaultLevel = "Basierend auf Upsilon"
-USBLowLevel = "Basierend auf Omega"
-USBParanoidLevel = "Nichts"
 Normal = "Normal"
 IdleTimeBeforeDimming = "Abdunkeln nach (s)"
 IdleTimeBeforeSuspend = "Anhalten nach (s)"
diff --git a/apps/settings/base.en.i18n b/apps/settings/base.en.i18n
index c6a048e2a..56f152054 100644
--- a/apps/settings/base.en.i18n
+++ b/apps/settings/base.en.i18n
@@ -72,14 +72,6 @@ Time = "Time"
 RTCWarning1 = "Enabling the clock drains the battery faster"
 RTCWarning2 = "when the calculator is powered off."
 SyntaxHighlighting = "Syntax Highlighting"
-USBExplanation1 = "The USB protection protects"
-USBExplanation2 = "the calculator from"
-USBExplanation3 = "unintentional locking"
-USBProtection = "USB Protection"
-USBProtectionLevel = "Updates accepted"
-USBDefaultLevel = "Based on Upsilon"
-USBLowLevel = "Based on Omega"
-USBParanoidLevel = "None"
 Normal = "Normal"
 IdleTimeBeforeDimming = "Dim after (s)"
 IdleTimeBeforeSuspend = "Suspend after (s)"
diff --git a/apps/settings/base.es.i18n b/apps/settings/base.es.i18n
index 839f25ba8..42ce777f2 100644
--- a/apps/settings/base.es.i18n
+++ b/apps/settings/base.es.i18n
@@ -72,14 +72,6 @@ Time = "Hora"
 RTCWarning1 = "Activar el reloj gasta la batería más rápido"
 RTCWarning2 = "cuando la calculadora está apagada."
 SyntaxHighlighting = "Resaltado de sintaxis"
-USBExplanation1 = "La protección USB protege"
-USBExplanation2 = "su calculadora del"
-USBExplanation3 = "bloqueo involuntario"
-USBProtection = "Protección USB"
-USBProtectionLevel = "Actualizaciones aceptadas"
-USBDefaultLevel = "Basado en Upsilon"
-USBLowLevel = "Basado en Omega"
-USBParanoidLevel = "Ninguno"
 Normal = "Normal"
 IdleTimeBeforeDimming = "Oscurecer después de (s)"
 IdleTimeBeforeSuspend = "Suspender después de (s)"
diff --git a/apps/settings/base.fr.i18n b/apps/settings/base.fr.i18n
index 87a4596ce..676e64687 100644
--- a/apps/settings/base.fr.i18n
+++ b/apps/settings/base.fr.i18n
@@ -72,14 +72,6 @@ Time = "Heure"
 RTCWarning1 = "Activer l'horloge décharge la batterie plus"
 RTCWarning2 = "vite quand la calculatrice est éteinte."
 SyntaxHighlighting = "Coloration syntaxique"
-USBExplanation1 = "La protection USB protège votre"
-USBExplanation2 = "calculatrice contre un verrouillage"
-USBExplanation3 = "non-intentionnel"
-USBProtection = "Protection USB"
-USBProtectionLevel = "Mise à jour acceptées"
-USBDefaultLevel = "Basées sur Upsilon"
-USBLowLevel = "Basées sur Omega"
-USBParanoidLevel = "Aucune"
 Normal = "Normale"
 IdleTimeBeforeDimming = "Assombrir après (s)"
 IdleTimeBeforeSuspend = "Éteindre après (s)"
diff --git a/apps/settings/base.hu.i18n b/apps/settings/base.hu.i18n
index 99dc79fc3..a46e8cdda 100644
--- a/apps/settings/base.hu.i18n
+++ b/apps/settings/base.hu.i18n
@@ -72,14 +72,6 @@ Time = "Óra"
 RTCWarning1 = "Amikor a számológép alvómódban van, az óra"
 RTCWarning2 = "használása az elemet gyorsabban meríti ki."
 SyntaxHighlighting = "Szintaxis kiemelés"
-USBExplanation1 = "Az USB-védelem megvédi"
-USBExplanation2 = "a számológépet a nem"
-USBExplanation3 = "szándékos reteszeléstől"
-USBProtection = "USB védelem"
-USBProtectionLevel = "Elfogadott frissítések"
-USBDefaultLevel = "Upsilon alapján"
-USBLowLevel = "Omega alapján"
-USBParanoidLevel = "Egyik sem"
 Normal = "Normale"
 IdleTimeBeforeDimming = "Assombrir après (s)"
 IdleTimeBeforeSuspend = "Éteindre après (s)"
diff --git a/apps/settings/base.it.i18n b/apps/settings/base.it.i18n
index 2603da889..e7dfe4d7f 100644
--- a/apps/settings/base.it.i18n
+++ b/apps/settings/base.it.i18n
@@ -72,14 +72,6 @@ Time = "Time"
 RTCWarning1 = "Enabling the clock drains the battery faster"
 RTCWarning2 = "when the calculator is powered off."
 SyntaxHighlighting = "Evidenziazione della sintassi"
-USBExplanation1 = "La protezione USB protegge"
-USBExplanation2 = "la calcolatrice dal"
-USBExplanation3 = "blocco involontario"
-USBProtection = "Protezione USB"
-USBProtectionLevel = "Aggiornamenti accettati"
-USBDefaultLevel = "Basato su Upsilon"
-USBLowLevel = "A base di Omega"
-USBParanoidLevel = "Nessuno"
 Normal = "Normale"
 IdleTimeBeforeDimming = "Scurisci dopo (s)"
 IdleTimeBeforeSuspend = "Sospendi dopo (s)"
diff --git a/apps/settings/base.nl.i18n b/apps/settings/base.nl.i18n
index d71a76824..f26e546c4 100644
--- a/apps/settings/base.nl.i18n
+++ b/apps/settings/base.nl.i18n
@@ -72,14 +72,6 @@ Time = "Time"
 RTCWarning1 = "Enabling the clock drains the battery faster"
 RTCWarning2 = "when the calculator is powered off."
 SyntaxHighlighting = "Syntax Highlighting"
-USBExplanation1 = "USB-beveiliging beschermt uw"
-USBExplanation2 = "rekenmachine tegen"
-USBExplanation3 = "onbedoelde vergrendeling"
-USBProtection = "USB-beveiliging"
-USBProtectionLevel = "Updates geaccepteerd"
-USBDefaultLevel = "Gebaseerd op Upsilon"
-USBLowLevel = "Op basis van Omega"
-USBParanoidLevel = "Geen"
 Normal = "Normaal"
 IdleTimeBeforeDimming = "Donkerder maken na (s)"
 IdleTimeBeforeSuspend = "Suspend after (s)"
diff --git a/apps/settings/base.pt.i18n b/apps/settings/base.pt.i18n
index b7639cb6e..950bc9927 100644
--- a/apps/settings/base.pt.i18n
+++ b/apps/settings/base.pt.i18n
@@ -72,14 +72,6 @@ Time = "Time"
 RTCWarning1 = "Enabling the clock drains the battery faster"
 RTCWarning2 = "when the calculator is powered off."
 SyntaxHighlighting = "Destaque da sintaxe"
-USBExplanation1 = "A proteção USB protege"
-USBExplanation2 = "sua calculadora contra"
-USBExplanation3 = "bloqueios não intencionais"
-USBProtection = "Proteção USB"
-USBProtectionLevel = "Atualizações aceitas"
-USBDefaultLevel = "Baseado em Upsilon"
-USBLowLevel = "Baseado em Ômega"
-USBParanoidLevel = "Nenhum"
 Normal = "Normal"
 IdleTimeBeforeDimming = "Diminuir depois (s)"
 IdleTimeBeforeSuspend = "Suspender depois (s)"
diff --git a/apps/settings/base.universal.i18n b/apps/settings/base.universal.i18n
index 124dc2112..210e673fb 100644
--- a/apps/settings/base.universal.i18n
+++ b/apps/settings/base.universal.i18n
@@ -1,4 +1 @@
 UsbSetting = "USB"
-USBDefaultLevelDesc = "L0"
-USBLowLevelDesc = "L1"
-USBParanoidLevelDesc = "L2"
diff --git a/apps/settings/main_controller.cpp b/apps/settings/main_controller.cpp
index 4b590b45f..7e71771f9 100644
--- a/apps/settings/main_controller.cpp
+++ b/apps/settings/main_controller.cpp
@@ -15,8 +15,6 @@ constexpr SettingsMessageTree s_modelFloatDisplayModeChildren[4] = {SettingsMess
 constexpr SettingsMessageTree s_modelComplexFormatChildren[3] = {SettingsMessageTree(I18n::Message::Real), SettingsMessageTree(I18n::Message::Cartesian), SettingsMessageTree(I18n::Message::Polar)};
 constexpr SettingsMessageTree s_modelDateTimeChildren[3] = {SettingsMessageTree(I18n::Message::ActivateClock), SettingsMessageTree(I18n::Message::Date), SettingsMessageTree(I18n::Message::Time)};
 constexpr SettingsMessageTree s_symbolChildren[4] = {SettingsMessageTree(I18n::Message::SymbolMultiplicationCross),SettingsMessageTree(I18n::Message::SymbolMultiplicationMiddleDot),SettingsMessageTree(I18n::Message::SymbolMultiplicationStar),SettingsMessageTree(I18n::Message::SymbolMultiplicationAutoSymbol)};
-constexpr SettingsMessageTree s_usbProtectionChildren[2] = {SettingsMessageTree(I18n::Message::USBProtection), SettingsMessageTree(I18n::Message::USBProtectionLevel, s_usbProtectionLevelChildren)};
-constexpr SettingsMessageTree s_usbProtectionLevelChildren[3] = {SettingsMessageTree(I18n::Message::USBDefaultLevel), SettingsMessageTree(I18n::Message::USBLowLevel), SettingsMessageTree(I18n::Message::USBParanoidLevel)};
 constexpr SettingsMessageTree s_externalChildren[2] = {SettingsMessageTree(I18n::Message::ExtAppWrite), SettingsMessageTree(I18n::Message::ExtAppEnabled)};
 constexpr SettingsMessageTree s_symbolFunctionChildren[3] = {SettingsMessageTree(I18n::Message::SymbolDefaultFunction), SettingsMessageTree(I18n::Message::SymbolArgDefaultFunction), SettingsMessageTree(I18n::Message::SymbolArgFunction)};
 constexpr SettingsMessageTree s_modelMathOptionsChildren[6] = {SettingsMessageTree(I18n::Message::AngleUnit, s_modelAngleChildren), SettingsMessageTree(I18n::Message::DisplayMode, s_modelFloatDisplayModeChildren), SettingsMessageTree(I18n::Message::EditionMode, s_modelEditionModeChildren), SettingsMessageTree(I18n::Message::SymbolFunction, s_symbolFunctionChildren), SettingsMessageTree(I18n::Message::ComplexFormat, s_modelComplexFormatChildren), SettingsMessageTree(I18n::Message::SymbolMultiplication, s_symbolChildren)};
diff --git a/apps/settings/sub_menu/preferences_controller.cpp b/apps/settings/sub_menu/preferences_controller.cpp
index 06650e842..dbf254966 100644
--- a/apps/settings/sub_menu/preferences_controller.cpp
+++ b/apps/settings/sub_menu/preferences_controller.cpp
@@ -170,15 +170,6 @@ Layout PreferencesController::layoutForPreferences(I18n::Message message) {
       return LayoutHelper::String(text, strlen(text), font);
     }
 
-    // DFU Protection level
-    case I18n::Message::USBDefaultLevel:
-    case I18n::Message::USBLowLevel:
-    case I18n::Message::USBParanoidLevel:
-    {
-      const char * text = " ";
-      return LayoutHelper::String(text, strlen(text), k_layoutFont);
-    }
-
     default:
       assert(false);
       return Layout();
diff --git a/build/utilities/translations_clean.py b/build/utilities/translations_clean.py
index bc955991a..afee202fa 100644
--- a/build/utilities/translations_clean.py
+++ b/build/utilities/translations_clean.py
@@ -32,7 +32,7 @@ IGNORE_PATHS = [
 ]
 IGNORE_PATHS_CONTENTS = [
     "__pycache__", ".png", ".esc", ".ttf", ".ico", ".jpg", ".jar", ".icn",
-    ".bnr", ".i18n"
+    ".bnr", ".i18n", ".cache"
 ]
 
 # If the key contain something that's in this list, keep it to prevent code breaking