diff --git a/apps/Makefile b/apps/Makefile
index 40605127f..4bba98235 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -45,7 +45,7 @@ snapshots_count = $(words $(apps))
 snapshot_includes = $(foreach i,$(app_headers),-include $(i) )
 epsilon_app_names = '$(foreach i,${EPSILON_APPS},"$(i)", )'
 
-$(call object_for,apps/apps_container_storage.cpp apps/apps_container.cpp apps/main.cpp): CXXFLAGS += $(snapshot_includes) -DAPPS_CONTAINER_APPS_DECLARATION="$(apps_declaration)" -DAPPS_CONTAINER_SNAPSHOT_DECLARATIONS="$(snapshots_declaration)" -DAPPS_CONTAINER_SNAPSHOT_CONSTRUCTORS="$(snapshots_construction)" -DAPPS_CONTAINER_SNAPSHOT_LIST="$(snapshots_list)" -DAPPS_CONTAINER_SNAPSHOT_COUNT=$(snapshots_count) -DEPSILON_APPS_NAMES=$(epsilon_app_names)
+$(call object_for,apps/apps_container_storage.cpp apps/apps_container.cpp apps/main.cpp): CXXFLAGS += $(snapshot_includes) -DAPPS_CONTAINER_APPS_DECLARATION="$(apps_declaration)" -DAPPS_CONTAINER_SNAPSHOT_DECLARATIONS="$(snapshots_declaration)" -DAPPS_CONTAINER_SNAPSHOT_CONSTRUCTORS="$(snapshots_construction)" -DAPPS_CONTAINER_SNAPSHOT_LIST="$(snapshots_list)" -DAPPS_CONTAINER_SNAPSHOT_COUNT=$(snapshots_count) -DEPSILON_APPS_NAMES=$(epsilon_app_names) -DUSERNAME=${USERNAME}
 
 # I18n file generation
 
diff --git a/apps/settings/main_controller_prompt_beta.cpp b/apps/settings/main_controller_prompt_beta.cpp
index b2ca4e128..df4c9f4aa 100644
--- a/apps/settings/main_controller_prompt_beta.cpp
+++ b/apps/settings/main_controller_prompt_beta.cpp
@@ -8,7 +8,11 @@ constexpr SettingsMessageTree s_modelEditionModeChildren[2] = {SettingsMessageTr
 constexpr SettingsMessageTree s_modelFloatDisplayModeChildren[4] = {SettingsMessageTree(I18n::Message::Decimal), SettingsMessageTree(I18n::Message::Scientific), SettingsMessageTree(I18n::Message::Engineering), SettingsMessageTree(I18n::Message::SignificantFigures)};
 constexpr SettingsMessageTree s_modelComplexFormatChildren[3] = {SettingsMessageTree(I18n::Message::Real), SettingsMessageTree(I18n::Message::Cartesian), SettingsMessageTree(I18n::Message::Polar)};
 constexpr SettingsMessageTree s_modelExamChildren[1] = {SettingsMessageTree(I18n::Message::ActivateExamMode)};
+#ifdef USERNAME
 constexpr SettingsMessageTree s_modelAboutChildren[5] = {SettingsMessageTree(I18n::Message::Username), SettingsMessageTree(I18n::Message::SoftwareVersion), SettingsMessageTree(I18n::Message::CustomSoftwareVersion), SettingsMessageTree(I18n::Message::SerialNumber), SettingsMessageTree(I18n::Message::FccId)};
+#else
+constexpr SettingsMessageTree s_modelAboutChildren[4] = {SettingsMessageTree(I18n::Message::SoftwareVersion), SettingsMessageTree(I18n::Message::CustomSoftwareVersion), SettingsMessageTree(I18n::Message::SerialNumber), SettingsMessageTree(I18n::Message::FccId)};
+#endif
 constexpr SettingsMessageTree s_ledColorChildren[4] = {SettingsMessageTree(I18n::Message::ColorWhite), SettingsMessageTree(I18n::Message::ColorGreen), SettingsMessageTree(I18n::Message::ColorBlue), SettingsMessageTree(I18n::Message::ColorYellow)};
 constexpr SettingsMessageTree s_accessibilityChildren[6] = {SettingsMessageTree(I18n::Message::AccessibilityInvertColors), SettingsMessageTree(I18n::Message::AccessibilityMagnify),SettingsMessageTree(I18n::Message::AccessibilityGamma),SettingsMessageTree(I18n::Message::AccessibilityGammaRed),SettingsMessageTree(I18n::Message::AccessibilityGammaGreen),SettingsMessageTree(I18n::Message::AccessibilityGammaBlue)};
 constexpr SettingsMessageTree s_contributorsChildren[5] = {SettingsMessageTree(I18n::Message::QuentinGuidee), SettingsMessageTree(I18n::Message::DannySimmons), SettingsMessageTree(I18n::Message::JoachimLeFournis), SettingsMessageTree(I18n::Message::JeanBaptisteBoric), SettingsMessageTree(I18n::Message::MaximeFriess)};
@@ -22,7 +26,11 @@ constexpr SettingsMessageTree s_modelMenu[] =
     SettingsMessageTree(I18n::Message::Language),
     SettingsMessageTree(I18n::Message::ExamMode, s_modelExamChildren, 1),
     SettingsMessageTree(I18n::Message::BetaPopUp),
+#ifdef USERNAME
     SettingsMessageTree(I18n::Message::About, s_modelAboutChildren, 5),
+#else
+    SettingsMessageTree(I18n::Message::About, s_modelAboutChildren, 4),
+#endif
     SettingsMessageTree(I18n::Message::LEDColor, s_ledColorChildren, 4),
     SettingsMessageTree(I18n::Message::Accessibility, s_accessibilityChildren, 6),
     SettingsMessageTree(I18n::Message::Contributors, s_contributorsChildren, 5)};
diff --git a/apps/settings/main_controller_prompt_none.cpp b/apps/settings/main_controller_prompt_none.cpp
index d5940c111..5c4874c3f 100644
--- a/apps/settings/main_controller_prompt_none.cpp
+++ b/apps/settings/main_controller_prompt_none.cpp
@@ -9,7 +9,11 @@ constexpr SettingsMessageTree s_modelEditionModeChildren[2] = {SettingsMessageTr
 constexpr SettingsMessageTree s_modelFloatDisplayModeChildren[4] = {SettingsMessageTree(I18n::Message::Decimal), SettingsMessageTree(I18n::Message::Scientific), SettingsMessageTree(I18n::Message::Engineering), SettingsMessageTree(I18n::Message::SignificantFigures)};
 constexpr SettingsMessageTree s_modelComplexFormatChildren[3] = {SettingsMessageTree(I18n::Message::Real), SettingsMessageTree(I18n::Message::Cartesian), SettingsMessageTree(I18n::Message::Polar)};
 constexpr SettingsMessageTree s_modelExamChildren[1] = {SettingsMessageTree(I18n::Message::ActivateExamMode)};
+#ifdef USERNAME
 constexpr SettingsMessageTree s_modelAboutChildren[5] = {SettingsMessageTree(I18n::Message::Username), SettingsMessageTree(I18n::Message::SoftwareVersion), SettingsMessageTree(I18n::Message::CustomSoftwareVersion), SettingsMessageTree(I18n::Message::SerialNumber), SettingsMessageTree(I18n::Message::FccId)};
+#else
+constexpr SettingsMessageTree s_modelAboutChildren[4] = {SettingsMessageTree(I18n::Message::SoftwareVersion), SettingsMessageTree(I18n::Message::CustomSoftwareVersion), SettingsMessageTree(I18n::Message::SerialNumber), SettingsMessageTree(I18n::Message::FccId)};
+#endif
 constexpr SettingsMessageTree s_ledColorChildren[4] = {SettingsMessageTree(I18n::Message::ColorWhite), SettingsMessageTree(I18n::Message::ColorGreen), SettingsMessageTree(I18n::Message::ColorBlue), SettingsMessageTree(I18n::Message::ColorYellow)};
 constexpr SettingsMessageTree s_accessibilityChildren[6] = {SettingsMessageTree(I18n::Message::AccessibilityInvertColors), SettingsMessageTree(I18n::Message::AccessibilityMagnify),SettingsMessageTree(I18n::Message::AccessibilityGamma),SettingsMessageTree(I18n::Message::AccessibilityGammaRed),SettingsMessageTree(I18n::Message::AccessibilityGammaGreen),SettingsMessageTree(I18n::Message::AccessibilityGammaBlue)};
 constexpr SettingsMessageTree s_contributorsChildren[5] = {SettingsMessageTree(I18n::Message::QuentinGuidee), SettingsMessageTree(I18n::Message::DannySimmons), SettingsMessageTree(I18n::Message::JoachimLeFournis), SettingsMessageTree(I18n::Message::JeanBaptisteBoric), SettingsMessageTree(I18n::Message::MaximeFriess)};
@@ -22,7 +26,11 @@ constexpr SettingsMessageTree s_modelMenu[] =
     SettingsMessageTree(I18n::Message::Brightness),
     SettingsMessageTree(I18n::Message::Language),
     SettingsMessageTree(I18n::Message::ExamMode, s_modelExamChildren, 1),
+#ifdef USERNAME
     SettingsMessageTree(I18n::Message::About, s_modelAboutChildren, 5),
+#else
+    SettingsMessageTree(I18n::Message::About, s_modelAboutChildren, 4),
+#endif
     SettingsMessageTree(I18n::Message::LEDColor, s_ledColorChildren, 4),
     SettingsMessageTree(I18n::Message::Accessibility, s_accessibilityChildren, 6),
     SettingsMessageTree(I18n::Message::Contributors, s_contributorsChildren, 5)};
diff --git a/apps/settings/main_controller_prompt_update.cpp b/apps/settings/main_controller_prompt_update.cpp
index ec1b82c73..466762df2 100644
--- a/apps/settings/main_controller_prompt_update.cpp
+++ b/apps/settings/main_controller_prompt_update.cpp
@@ -8,7 +8,11 @@ constexpr SettingsMessageTree s_modelEditionModeChildren[2] = {SettingsMessageTr
 constexpr SettingsMessageTree s_modelFloatDisplayModeChildren[4] = {SettingsMessageTree(I18n::Message::Decimal), SettingsMessageTree(I18n::Message::Scientific), SettingsMessageTree(I18n::Message::Engineering), SettingsMessageTree(I18n::Message::SignificantFigures)};
 constexpr SettingsMessageTree s_modelComplexFormatChildren[3] = {SettingsMessageTree(I18n::Message::Real), SettingsMessageTree(I18n::Message::Cartesian), SettingsMessageTree(I18n::Message::Polar)};
 constexpr SettingsMessageTree s_modelExamChildren[1] = {SettingsMessageTree(I18n::Message::ActivateExamMode)};
+#ifdef USERNAME
 constexpr SettingsMessageTree s_modelAboutChildren[5] = {SettingsMessageTree(I18n::Message::Username), SettingsMessageTree(I18n::Message::SoftwareVersion), SettingsMessageTree(I18n::Message::CustomSoftwareVersion), SettingsMessageTree(I18n::Message::SerialNumber), SettingsMessageTree(I18n::Message::FccId)};
+#else
+constexpr SettingsMessageTree s_modelAboutChildren[4] = {SettingsMessageTree(I18n::Message::SoftwareVersion), SettingsMessageTree(I18n::Message::CustomSoftwareVersion), SettingsMessageTree(I18n::Message::SerialNumber), SettingsMessageTree(I18n::Message::FccId)};
+#endif
 constexpr SettingsMessageTree s_ledColorChildren[4] = {SettingsMessageTree(I18n::Message::ColorWhite), SettingsMessageTree(I18n::Message::ColorGreen), SettingsMessageTree(I18n::Message::ColorBlue), SettingsMessageTree(I18n::Message::ColorYellow)};
 constexpr SettingsMessageTree s_accessibilityChildren[6] = {SettingsMessageTree(I18n::Message::AccessibilityInvertColors), SettingsMessageTree(I18n::Message::AccessibilityMagnify),SettingsMessageTree(I18n::Message::AccessibilityGamma),SettingsMessageTree(I18n::Message::AccessibilityGammaRed),SettingsMessageTree(I18n::Message::AccessibilityGammaGreen),SettingsMessageTree(I18n::Message::AccessibilityGammaBlue)};
 constexpr SettingsMessageTree s_contributorsChildren[5] = {SettingsMessageTree(I18n::Message::QuentinGuidee), SettingsMessageTree(I18n::Message::DannySimmons), SettingsMessageTree(I18n::Message::JoachimLeFournis), SettingsMessageTree(I18n::Message::JeanBaptisteBoric), SettingsMessageTree(I18n::Message::MaximeFriess)};
@@ -22,7 +26,11 @@ constexpr SettingsMessageTree s_modelMenu[] =
     SettingsMessageTree(I18n::Message::Language),
     SettingsMessageTree(I18n::Message::ExamMode, s_modelExamChildren, 1),
     SettingsMessageTree(I18n::Message::UpdatePopUp),
+#ifdef USERNAME
     SettingsMessageTree(I18n::Message::About, s_modelAboutChildren, 5),
+#else
+    SettingsMessageTree(I18n::Message::About, s_modelAboutChildren, 4),
+#endif
     SettingsMessageTree(I18n::Message::LEDColor, s_ledColorChildren, 4),
     SettingsMessageTree(I18n::Message::Accessibility, s_accessibilityChildren, 6),
     SettingsMessageTree(I18n::Message::Contributors, s_contributorsChildren, 5)};
diff --git a/apps/settings/sub_menu/about_controller.cpp b/apps/settings/sub_menu/about_controller.cpp
index 4c8f75293..5ccf77c6e 100644
--- a/apps/settings/sub_menu/about_controller.cpp
+++ b/apps/settings/sub_menu/about_controller.cpp
@@ -22,7 +22,11 @@ bool AboutController::handleEvent(Ion::Events::Event event) {
     return true;
   }
   if (event == Ion::Events::OK || event == Ion::Events::EXE) {
+#ifdef USERNAME
     if (selectedRow() == 1) {
+#else
+    if (selectedRow() == 0) {
+#endif
       MessageTableCellWithBuffer * myCell = (MessageTableCellWithBuffer *)m_selectableTableView.selectedCell();
       if (strcmp(myCell->accessoryText(), Ion::patchLevel()) == 0) {
         myCell->setAccessoryText(Ion::softwareVersion());
@@ -31,7 +35,11 @@ bool AboutController::handleEvent(Ion::Events::Event event) {
       myCell->setAccessoryText(Ion::patchLevel());
       return true;
     }
+#ifdef USERNAME
     if (selectedRow() == 2) {
+#else
+    if (selectedRow() == 1) {
+#endif
       MessageTableCellWithBuffer * myCell = (MessageTableCellWithBuffer *)m_selectableTableView.selectedCell();
       if (strcmp(myCell->accessoryText(), Ion::customSoftwareVersion()) == 0) {
         myCell->setAccessoryText("Public"); //Change for public/dev
@@ -60,13 +68,19 @@ void AboutController::willDisplayCellForIndex(HighlightCell * cell, int index) {
   GenericSubController::willDisplayCellForIndex(cell, index);
   MessageTableCellWithBuffer * myCell = (MessageTableCellWithBuffer *)cell;
   static const char * messages[] = {
+#ifdef USERNAME
     Ion::username(),
+#endif
     Ion::softwareVersion(),
     Ion::customSoftwareVersion(),
     Ion::serialNumber(),
     Ion::fccId()
   };
+#ifdef USERNAME
   assert(index >= 0 && index < 5);
+#else
+  assert(index >= 0 && index < 4);
+#endif
   myCell->setAccessoryText(messages[index]);
 }
 
diff --git a/apps/settings/sub_menu/about_controller.h b/apps/settings/sub_menu/about_controller.h
index 892dc48f7..61fa22e2b 100644
--- a/apps/settings/sub_menu/about_controller.h
+++ b/apps/settings/sub_menu/about_controller.h
@@ -14,7 +14,11 @@ public:
   int reusableCellCount(int type) override;
   void willDisplayCellForIndex(HighlightCell * cell, int index) override;
 private:
+#ifdef USERNAME
   constexpr static int k_totalNumberOfCell = 5;
+#else
+  constexpr static int k_totalNumberOfCell = 4;
+#endif
   MessageTableCellWithBuffer m_cells[k_totalNumberOfCell];
   HardwareTest::PopUpController m_hardwareTestPopUpController;
 };
diff --git a/build/config.mak b/build/config.mak
index 8ae1c0831..fa186fab5 100644
--- a/build/config.mak
+++ b/build/config.mak
@@ -4,8 +4,8 @@ PLATFORM ?= device
 DEBUG ?= 0
 
 EPSILON_VERSION ?= 12.0.0
-EPSILON_CUSTOM_VERSION ?= 1.13.4-0
-USERNAME ?= N/A
+EPSILON_CUSTOM_VERSION ?= 1.13.5-0
+# USERNAME ?= N/A
 # Valid values are "none", "update", "beta"
 EPSILON_APPS ?= calculation rpn graph code statistics probability solver atom sequence regression settings
 EPSILON_I18N ?= en fr es de pt
@@ -24,5 +24,8 @@ endif
 include build/toolchain.$(TOOLCHAIN).mak
 
 SFLAGS += -DDEBUG=$(DEBUG)
+ifdef USERNAME
+  SFLAGS += -DUSERNAME=$(USERNAME)
+endif
 SFLAGS += -DEPSILON_GETOPT=$(EPSILON_GETOPT)
 SFLAGS += -DESCHER_LOG_EVENTS_BINARY=$(ESCHER_LOG_EVENTS_BINARY)
diff --git a/ion/Makefile b/ion/Makefile
index b6c955e6d..9778af4a1 100644
--- a/ion/Makefile
+++ b/ion/Makefile
@@ -22,7 +22,7 @@ ion_console_display_src += ion/src/shared/console_display.cpp
 # char test[4]= "ab"; is valid and should initialize test to 'a','b',0,0).
 # Older versions of GCC are not conformant so we resort to an initializer list.
 initializer_list = $(shell echo $(1) | sed  "s/\(.\)/'\1',/g")0
-$(call object_for,ion/src/shared/platform_info.cpp): SFLAGS += -DPATCH_LEVEL="$(call initializer_list,$(PATCH_LEVEL))" -DEPSILON_VERSION="$(call initializer_list,$(EPSILON_VERSION))" -DEPSILON_CUSTOM_VERSION="$(call initializer_list,$(EPSILON_CUSTOM_VERSION))" -DUSERNAME="$(call initializer_list,$(USERNAME))"
+$(call object_for,ion/src/shared/platform_info.cpp): SFLAGS += -DPATCH_LEVEL="$(call initializer_list,$(PATCH_LEVEL))" -DEPSILON_VERSION="$(call initializer_list,$(EPSILON_VERSION))" -DEPSILON_CUSTOM_VERSION="$(call initializer_list,$(EPSILON_CUSTOM_VERSION))" -DUSERNAME="$(call initializer_list,$(USERNAME))" 
 
 ion_src += $(addprefix ion/src/shared/, \
   console_line.cpp \
diff --git a/ion/include/ion.h b/ion/include/ion.h
index b6754a79f..e30d36cb9 100644
--- a/ion/include/ion.h
+++ b/ion/include/ion.h
@@ -28,7 +28,9 @@ void ion_main(int argc, const char * const argv[]);
 namespace Ion {
 
 const char * serialNumber();
+#ifdef USERNAME
 const char * username();
+#endif
 const char * softwareVersion();
 const char * customSoftwareVersion();
 const char * patchLevel();
diff --git a/ion/src/shared/platform_info.cpp b/ion/src/shared/platform_info.cpp
index 77c313f26..da7af7673 100644
--- a/ion/src/shared/platform_info.cpp
+++ b/ion/src/shared/platform_info.cpp
@@ -13,10 +13,6 @@
 #error This file expects EPSILON_CUSTOM_VERSION to be defined
 #endif
 
-#ifndef USERNAME
-#error This file expects USERNAME to be defined
-#endif
-
 #ifndef HEADER_SECTION
 #define HEADER_SECTION
 #endif
@@ -32,7 +28,9 @@ public:
     m_header(Magic),
     m_version{EPSILON_VERSION},
     m_customVersion{EPSILON_CUSTOM_VERSION},
+#ifdef USERNAME
     m_username{USERNAME},
+#endif
     m_patchLevel{PATCH_LEVEL},
     m_storageAddress(storageAddress),
     m_storageSize(Ion::Storage::k_storageSize),
@@ -51,6 +49,7 @@ public:
     assert(m_footer == Magic);
     return m_customVersion;
   }
+#ifdef USERNAME
   const char * username() const {
     assert(m_storageAddress != nullptr);
     assert(m_storageSize != 0);
@@ -58,6 +57,7 @@ public:
     assert(m_footer == Magic);
     return m_username;
   }
+#endif
   const char * patchLevel() const {
     assert(m_storageAddress != nullptr);
     assert(m_storageSize != 0);
@@ -70,7 +70,9 @@ private:
   uint32_t m_header;
   const char m_version[8];
   const char m_customVersion[16];
+#ifdef USERNAME
   const char m_username[16];
+#endif
   const char m_patchLevel[8];
   void * m_storageAddress;
   size_t m_storageSize;
@@ -87,9 +89,11 @@ const char * Ion::customSoftwareVersion() {
   return platform_infos.customVersion();
 }
 
+#ifdef USERNAME
 const char * Ion::username() {
   return platform_infos.username();
 }
+#endif
 
 const char * Ion::patchLevel() {
   return platform_infos.patchLevel();