diff --git a/.gitmodules b/.gitmodules
index 3a20a2e0..d92c9f9e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -19,9 +19,6 @@
 [submodule "3rdparty/uvw"]
 	path = 3rdparty/uvw
 	url = https://github.com/skypjack/uvw.git
-[submodule "3rdparty/backward-cpp"]
-	path = 3rdparty/backward-cpp
-	url = https://github.com/Qv2ray/backward-cpp
 [submodule "cmake/android"]
 	path = cmake/android
 	url = https://github.com/LaurentGomila/qt-android-cmake
diff --git a/3rdparty/backward-cpp b/3rdparty/backward-cpp
deleted file mode 160000
index 42c350d1..00000000
--- a/3rdparty/backward-cpp
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 42c350d16545a2fb89ba2fea815b9bbf69de66d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 23813670..ba1cd4de 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -402,13 +402,6 @@ set(QV2RAY_FULL_SOURCES
 QVLOG(QV2RAY_QM_FILES)
 QVLOG(QV2RAY_QRC_RESOURCES)
 
-if(NOT ANDROID AND NOT DEFINED DISABLE_BACKWARD_CPP)
-    include(cmake/backward-cpp.cmake)
-    add_definitions(-DQV2RAY_HAS_BACKWARD)
-    target_link_libraries(qv2ray_baselib Backward::Backward)
-    add_backward(qv2ray_baselib)
-endif()
-
 if(QV2RAY_QT6)
     qt6_add_executable(qv2ray ${GUI_TYPE} ${QV2RAY_FULL_SOURCES})
     # For Qt5, Android
diff --git a/cmake/backward-cpp.cmake b/cmake/backward-cpp.cmake
deleted file mode 100644
index db6357d5..00000000
--- a/cmake/backward-cpp.cmake
+++ /dev/null
@@ -1,206 +0,0 @@
-#
-# BackwardMacros.cmake
-# Copyright 2013 Google Inc. All Rights Reserved.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
-
-###############################################################################
-# OPTIONS
-###############################################################################
-
-set(STACK_WALKING_UNWIND TRUE CACHE BOOL
-    "Use compiler's unwind API")
-set(STACK_WALKING_BACKTRACE FALSE CACHE BOOL
-    "Use backtrace from (e)glibc for stack walking")
-
-set(STACK_DETAILS_AUTO_DETECT TRUE CACHE BOOL
-    "Auto detect backward's stack details dependencies")
-
-set(STACK_DETAILS_BACKTRACE_SYMBOL FALSE CACHE BOOL
-    "Use backtrace from (e)glibc for symbols resolution")
-set(STACK_DETAILS_DW FALSE CACHE BOOL
-    "Use libdw to read debug info")
-set(STACK_DETAILS_BFD FALSE CACHE BOOL
-    "Use libbfd to read debug info")
-set(STACK_DETAILS_DWARF FALSE CACHE BOOL
-    "Use libdwarf/libelf to read debug info")
-
-if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR AND NOT DEFINED BACKWARD_TESTS)
-    # If this is a top level CMake project, we most lixely want the tests
-    set(BACKWARD_TESTS ON CACHE BOOL "Enable tests")
-else()
-    set(BACKWARD_TESTS OFF CACHE BOOL "Enable tests")
-endif()
-###############################################################################
-# CONFIGS
-###############################################################################
-if (${STACK_DETAILS_AUTO_DETECT})
-    include(FindPackageHandleStandardArgs)
-
-    # find libdw
-    find_path(LIBDW_INCLUDE_DIR NAMES "elfutils/libdw.h" "elfutils/libdwfl.h")
-    find_library(LIBDW_LIBRARY dw)
-    set(LIBDW_INCLUDE_DIRS ${LIBDW_INCLUDE_DIR} )
-    set(LIBDW_LIBRARIES ${LIBDW_LIBRARY} )
-    find_package_handle_standard_args(libdw DEFAULT_MSG
-        LIBDW_LIBRARY LIBDW_INCLUDE_DIR)
-    mark_as_advanced(LIBDW_INCLUDE_DIR LIBDW_LIBRARY)
-
-    # find libbfd
-    find_path(LIBBFD_INCLUDE_DIR NAMES "bfd.h")
-    find_path(LIBDL_INCLUDE_DIR NAMES "dlfcn.h")
-    find_library(LIBBFD_LIBRARY bfd)
-    find_library(LIBDL_LIBRARY dl)
-    set(LIBBFD_INCLUDE_DIRS ${LIBBFD_INCLUDE_DIR} ${LIBDL_INCLUDE_DIR})
-    set(LIBBFD_LIBRARIES ${LIBBFD_LIBRARY} ${LIBDL_LIBRARY})
-    find_package_handle_standard_args(libbfd DEFAULT_MSG
-        LIBBFD_LIBRARY LIBBFD_INCLUDE_DIR
-        LIBDL_LIBRARY LIBDL_INCLUDE_DIR)
-    mark_as_advanced(LIBBFD_INCLUDE_DIR LIBBFD_LIBRARY
-        LIBDL_INCLUDE_DIR LIBDL_LIBRARY)
-
-    # find libdwarf
-    find_path(LIBDWARF_INCLUDE_DIR NAMES "libdwarf.h" PATH_SUFFIXES libdwarf)
-    find_path(LIBELF_INCLUDE_DIR NAMES "libelf.h")
-    find_path(LIBDL_INCLUDE_DIR NAMES "dlfcn.h")
-    find_library(LIBDWARF_LIBRARY dwarf)
-    find_library(LIBELF_LIBRARY elf)
-    find_library(LIBDL_LIBRARY dl)
-    set(LIBDWARF_INCLUDE_DIRS ${LIBDWARF_INCLUDE_DIR} ${LIBELF_INCLUDE_DIR} ${LIBDL_INCLUDE_DIR})
-    set(LIBDWARF_LIBRARIES ${LIBDWARF_LIBRARY} ${LIBELF_LIBRARY} ${LIBDL_LIBRARY})
-    find_package_handle_standard_args(libdwarf DEFAULT_MSG
-        LIBDWARF_LIBRARY LIBDWARF_INCLUDE_DIR
-        LIBELF_LIBRARY LIBELF_INCLUDE_DIR
-        LIBDL_LIBRARY LIBDL_INCLUDE_DIR)
-    mark_as_advanced(LIBDWARF_INCLUDE_DIR LIBDWARF_LIBRARY
-        LIBELF_INCLUDE_DIR LIBELF_LIBRARY
-        LIBDL_INCLUDE_DIR LIBDL_LIBRARY)
-
-    if (LIBDW_FOUND)
-        LIST(APPEND _BACKWARD_INCLUDE_DIRS ${LIBDW_INCLUDE_DIRS})
-        LIST(APPEND _BACKWARD_LIBRARIES ${LIBDW_LIBRARIES})
-        set(STACK_DETAILS_DW TRUE)
-        set(STACK_DETAILS_BFD FALSE)
-        set(STACK_DETAILS_DWARF FALSE)
-        set(STACK_DETAILS_BACKTRACE_SYMBOL FALSE)
-    elseif(LIBBFD_FOUND)
-        LIST(APPEND _BACKWARD_INCLUDE_DIRS ${LIBBFD_INCLUDE_DIRS})
-        LIST(APPEND _BACKWARD_LIBRARIES ${LIBBFD_LIBRARIES})
-
-        # If we attempt to link against static bfd, make sure to link its dependencies, too
-        get_filename_component(bfd_lib_ext "${LIBBFD_LIBRARY}" EXT)
-        if (bfd_lib_ext STREQUAL "${CMAKE_STATIC_LIBRARY_SUFFIX}")
-            list(APPEND _BACKWARD_LIBRARIES iberty z)
-        endif()
-
-        set(STACK_DETAILS_DW FALSE)
-        set(STACK_DETAILS_BFD TRUE)
-        set(STACK_DETAILS_DWARF FALSE)
-        set(STACK_DETAILS_BACKTRACE_SYMBOL FALSE)
-    elseif(LIBDWARF_FOUND)
-        LIST(APPEND _BACKWARD_INCLUDE_DIRS ${LIBDWARF_INCLUDE_DIRS})
-        LIST(APPEND _BACKWARD_LIBRARIES ${LIBDWARF_LIBRARIES})
-
-        set(STACK_DETAILS_DW FALSE)
-        set(STACK_DETAILS_BFD FALSE)
-        set(STACK_DETAILS_DWARF TRUE)
-        set(STACK_DETAILS_BACKTRACE_SYMBOL FALSE)
-    else()
-        set(STACK_DETAILS_DW FALSE)
-        set(STACK_DETAILS_BFD FALSE)
-        set(STACK_DETAILS_DWARF FALSE)
-        set(STACK_DETAILS_BACKTRACE_SYMBOL TRUE)
-    endif()
-else()
-    if (STACK_DETAILS_DW)
-        LIST(APPEND _BACKWARD_LIBRARIES dw)
-    endif()
-
-    if (STACK_DETAILS_BFD)
-        LIST(APPEND _BACKWARD_LIBRARIES bfd dl)
-    endif()
-
-    if (STACK_DETAILS_DWARF)
-        LIST(APPEND _BACKWARD_LIBRARIES dwarf elf)
-    endif()
-endif()
-
-macro(map_definitions var_prefix define_prefix)
-    foreach(def ${ARGN})
-        if (${${var_prefix}${def}})
-            LIST(APPEND _BACKWARD_DEFINITIONS "${define_prefix}${def}=1")
-        else()
-            LIST(APPEND _BACKWARD_DEFINITIONS "${define_prefix}${def}=0")
-        endif()
-    endforeach()
-endmacro()
-
-if (NOT _BACKWARD_DEFINITIONS)
-    map_definitions("STACK_WALKING_" "BACKWARD_HAS_" UNWIND BACKTRACE)
-    map_definitions("STACK_DETAILS_" "BACKWARD_HAS_" BACKTRACE_SYMBOL DW BFD DWARF)
-endif()
-
-set(BACKWARD_INCLUDE_DIR "${CMAKE_CURRENT_LIST_DIR}")
-
-set(BACKWARD_HAS_EXTERNAL_LIBRARIES FALSE)
-set(FIND_PACKAGE_REQUIRED_VARS BACKWARD_INCLUDE_DIR)
-if(DEFINED _BACKWARD_LIBRARIES)
-    set(BACKWARD_HAS_EXTERNAL_LIBRARIES TRUE)
-    list(APPEND FIND_PACKAGE_REQUIRED_VARS _BACKWARD_LIBRARIES)
-endif()
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Backward
-    REQUIRED_VARS ${FIND_PACKAGE_REQUIRED_VARS}
-    )
-list(APPEND _BACKWARD_INCLUDE_DIRS ${BACKWARD_INCLUDE_DIR})
-
-macro(add_backward target)
-    target_include_directories(${target} PRIVATE ${BACKWARD_INCLUDE_DIRS})
-    set_property(TARGET ${target} APPEND PROPERTY COMPILE_DEFINITIONS ${BACKWARD_DEFINITIONS})
-    set_property(TARGET ${target} APPEND PROPERTY LINK_LIBRARIES ${BACKWARD_LIBRARIES})
-endmacro()
-
-set(BACKWARD_INCLUDE_DIRS ${_BACKWARD_INCLUDE_DIRS} CACHE INTERNAL "_BACKWARD_INCLUDE_DIRS")
-set(BACKWARD_DEFINITIONS ${_BACKWARD_DEFINITIONS} CACHE INTERNAL "BACKWARD_DEFINITIONS")
-set(BACKWARD_LIBRARIES ${_BACKWARD_LIBRARIES} CACHE INTERNAL "BACKWARD_LIBRARIES")
-mark_as_advanced(BACKWARD_INCLUDE_DIRS BACKWARD_DEFINITIONS BACKWARD_LIBRARIES)
-
-# Expand each definition in BACKWARD_DEFINITIONS to its own cmake var and export
-# to outer scope
-foreach(var ${BACKWARD_DEFINITIONS})
-    string(REPLACE "=" ";" var_as_list ${var})
-    list(GET var_as_list 0 var_name)
-    list(GET var_as_list 1 var_value)
-    set(${var_name} ${var_value})
-    mark_as_advanced(${var_name})
-endforeach()
-
-if (NOT TARGET Backward::Backward)
-    add_library(Backward::Backward INTERFACE IMPORTED)
-    set_target_properties(Backward::Backward PROPERTIES
-        INTERFACE_INCLUDE_DIRECTORIES "${BACKWARD_INCLUDE_DIRS}"
-        INTERFACE_COMPILE_DEFINITIONS "${BACKWARD_DEFINITIONS}"
-        )
-    if(BACKWARD_HAS_EXTERNAL_LIBRARIES)
-        set_target_properties(Backward::Backward PROPERTIES
-            INTERFACE_LINK_LIBRARIES "${BACKWARD_LIBRARIES}"
-            )
-    endif()
-endif()
diff --git a/makespec/BUILDVERSION b/makespec/BUILDVERSION
index 67285038..1bdacf3a 100644
--- a/makespec/BUILDVERSION
+++ b/makespec/BUILDVERSION
@@ -1 +1 @@
-6152
+6153
diff --git a/src/main.cpp b/src/main.cpp
index 48cac5d3..4d36c994 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,12 +1,5 @@
 #include <QtGlobal>
 
-// Backtrace Handler
-#ifndef Q_OS_WIN
-#ifdef QV2RAY_HAS_BACKWARD
-#include "3rdparty/backward-cpp/backward.hpp"
-#endif
-#endif
-
 #ifdef QV2RAY_CLI
 #include "ui/cli/Qv2rayCliApplication.hpp"
 #endif
@@ -59,31 +52,7 @@ const QString SayLastWords() noexcept
     msg << "------- BEGIN QV2RAY CRASH REPORT -------";
 
     {
-#ifndef Q_OS_WIN
-#ifdef QV2RAY_HAS_BACKWARD
-        const static QString SourceFormat = "    ---> %1:[%2:%3]";
-        backward::StackTrace st;
-        backward::TraceResolver resolver;
-        st.load_here(64);
-        resolver.load_stacktrace(st);
-        //
-        for (size_t i = 0; i < st.size(); i++)
-        {
-            const auto &trace = resolver.resolve(st[i]);
-            msg << QString("#%1: %2").arg(i).arg(trace.object_function.c_str());
-            if (!trace.source.filename.empty())
-            {
-                msg << SourceFormat.arg(trace.source.filename.c_str()).arg(trace.source.line).arg(trace.source.col);
-            }
-            for (const auto &sourceX : trace.inliners)
-            {
-                auto newLine = QString("    ---> [FUNC:%1] ").arg(sourceX.function.c_str());
-                newLine += "    " + SourceFormat.arg(sourceX.filename.c_str()).arg(sourceX.line).arg(sourceX.col);
-                msg << newLine;
-            }
-        }
-#endif
-#else
+#ifdef Q_OS_WIN
         void *stack[1024];
         HANDLE process = GetCurrentProcess();
         SymInitialize(process, NULL, TRUE);