diff --git a/client/CMakeLists.txt b/client/CMakeLists.txt
index 50e0c91f9..b23747b72 100644
--- a/client/CMakeLists.txt
+++ b/client/CMakeLists.txt
@@ -1,3 +1,10 @@
+# MINGW:
+#  On ProxSpace 3.4:
+#    cmake -G"MSYS Makefiles" ..
+#  On Proxspace 3.3 or less, you need to install cmake:
+#    pacman -S mingw-w64-x86_64-cmake
+#    /mingw64/bin/cmake -G"MSYS Makefiles" ..
+
 cmake_minimum_required(VERSION 3.10)
 project(proxmark3)
 
@@ -32,29 +39,6 @@ endforeach()
 
 SET (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
-INCLUDE(FindSSE)
-if(NOT SSE2_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for SSE2 on this machine.")
-endif(NOT SSE2_FOUND)
-if(NOT SSE3_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for SSE3 on this machine.")
-endif(NOT SSE3_FOUND)
-if(NOT SSSE3_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for SSSE3 on this machine.")
-endif(NOT SSSE3_FOUND)
-if(NOT SSE4_1_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for SSE4.1 on this machine.")
-endif(NOT SSE4_1_FOUND)
-if(NOT AVX_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for AVX on this machine.")
-endif(NOT AVX_FOUND)
-if(NOT AVX2_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for AVX2 on this machine.")
-endif(NOT AVX2_FOUND)
-if(NOT AVX512_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for AVX512 on this machine.")
-endif(NOT AVX512_FOUND)
-
 add_subdirectory(deps)
 
 set (TARGET_SOURCES
@@ -207,10 +191,6 @@ if (APPLE)
     set(ADDITIONAL_LNK "-framework Foundation" "-framework AppKit")
 endif (APPLE)
 
-if (MINGW)
-    set(CMAKE_CXX_FLAGS "-mno-ms-bitfields -fexec-charset=cp850 ${CMAKE_CXX_FLAGS}")
-endif (MINGW)
-
 if (Qt5_FOUND)
     message("Qt5 library found, building gui :)")
     set(CMAKE_AUTOMOC ON)
@@ -238,6 +218,17 @@ add_executable(
 
 target_compile_options(proxmark3 PUBLIC -Wall -Werror -O3)
 
+if (MINGW)
+    # Mingw uses by default Microsoft printf, we want the GNU printf (e.g. for %z)
+    # and setting _ISOC99_SOURCE sets internally __USE_MINGW_ANSI_STDIO=1
+    # FTR __USE_MINGW_ANSI_STDIO seems deprecated in Mingw32
+    # but not Mingw64 https://fr.osdn.net/projects/mingw/lists/archive/users/2019-January/000199.html
+    target_compile_definitions(proxmark3 PRIVATE _ISOC99_SOURCE)
+
+    set(CMAKE_C_FLAGS "-mno-ms-bitfields -fexec-charset=cp850 ${CMAKE_C_FLAGS}")
+    set(CMAKE_CXX_FLAGS "-mno-ms-bitfields -fexec-charset=cp850 ${CMAKE_CXX_FLAGS}")
+endif (MINGW)
+
 target_include_directories(proxmark3 PRIVATE
         ../common
         ../common_fpga
diff --git a/client/cmake/FindSSE.cmake b/client/cmake/FindSSE.cmake
deleted file mode 100644
index 14021e1c1..000000000
--- a/client/cmake/FindSSE.cmake
+++ /dev/null
@@ -1,168 +0,0 @@
-# Check if SSE/AVX instructions are available on the machine where
-# the project is compiled.
-
-IF(CMAKE_SYSTEM_NAME MATCHES "Linux")
-    EXEC_PROGRAM(cat ARGS "/proc/cpuinfo" OUTPUT_VARIABLE CPUINFO)
-
-    STRING(REGEX REPLACE "^.*(sse2).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "sse2" "${SSE_THERE}" SSE2_TRUE)
-    IF (SSE2_TRUE)
-        set(SSE2_FOUND true CACHE BOOL "SSE2 available on host")
-    ELSE (SSE2_TRUE)
-        set(SSE2_FOUND false CACHE BOOL "SSE2 available on host")
-    ENDIF (SSE2_TRUE)
-
-    # /proc/cpuinfo apparently omits sse3 :(
-    STRING(REGEX REPLACE "^.*[^s](sse3).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "sse3" "${SSE_THERE}" SSE3_TRUE)
-    IF (NOT SSE3_TRUE)
-        STRING(REGEX REPLACE "^.*(T2300).*$" "\\1" SSE_THERE ${CPUINFO})
-        STRING(COMPARE EQUAL "T2300" "${SSE_THERE}" SSE3_TRUE)
-    ENDIF (NOT SSE3_TRUE)
-
-    STRING(REGEX REPLACE "^.*(ssse3).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "ssse3" "${SSE_THERE}" SSSE3_TRUE)
-    IF (SSE3_TRUE OR SSSE3_TRUE)
-        set(SSE3_FOUND true CACHE BOOL "SSE3 available on host")
-    ELSE (SSE3_TRUE OR SSSE3_TRUE)
-        set(SSE3_FOUND false CACHE BOOL "SSE3 available on host")
-    ENDIF (SSE3_TRUE OR SSSE3_TRUE)
-    IF (SSSE3_TRUE)
-        set(SSSE3_FOUND true CACHE BOOL "SSSE3 available on host")
-    ELSE (SSSE3_TRUE)
-        set(SSSE3_FOUND false CACHE BOOL "SSSE3 available on host")
-    ENDIF (SSSE3_TRUE)
-
-    STRING(REGEX REPLACE "^.*(sse4_1).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "sse4_1" "${SSE_THERE}" SSE41_TRUE)
-    IF (SSE41_TRUE)
-        set(SSE4_1_FOUND true CACHE BOOL "SSE4.1 available on host")
-    ELSE (SSE41_TRUE)
-        set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
-    ENDIF (SSE41_TRUE)
-
-    STRING(REGEX REPLACE "^.*(avx).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "avx" "${SSE_THERE}" AVX_TRUE)
-    IF (AVX_TRUE)
-        set(AVX_FOUND true CACHE BOOL "AVX available on host")
-    ELSE (AVX_TRUE)
-        set(AVX_FOUND false CACHE BOOL "AVX available on host")
-    ENDIF (AVX_TRUE)
-
-    STRING(REGEX REPLACE "^.*(avx2).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "avx2" "${SSE_THERE}" AVX2_TRUE)
-    IF (AVX2_TRUE)
-        set(AVX2_FOUND true CACHE BOOL "AVX2 available on host")
-    ELSE (AVX2_TRUE)
-        set(AVX2_FOUND false CACHE BOOL "AVX2 available on host")
-    ENDIF (AVX2_TRUE)
-
-    STRING(REGEX REPLACE "^.*(avx512).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "avx512" "${SSE_THERE}" AVX2_TRUE)
-    IF (AVX512_TRUE)
-        set(AVX512_FOUND true CACHE BOOL "AVX512 available on host")
-    ELSE (AVX2_TRUE)
-        set(AVX512_FOUND false CACHE BOOL "AVX512 available on host")
-    ENDIF (AVX512_TRUE)
-
-ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Darwin")
-    EXEC_PROGRAM("/usr/sbin/sysctl -n machdep.cpu.features" OUTPUT_VARIABLE
-            CPUINFO)
-
-    STRING(REGEX REPLACE "^.*[^S](SSE2).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "SSE2" "${SSE_THERE}" SSE2_TRUE)
-    IF (SSE2_TRUE)
-        set(SSE2_FOUND true CACHE BOOL "SSE2 available on host")
-    ELSE (SSE2_TRUE)
-        set(SSE2_FOUND false CACHE BOOL "SSE2 available on host")
-    ENDIF (SSE2_TRUE)
-
-    STRING(REGEX REPLACE "^.*[^S](SSE3).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "SSE3" "${SSE_THERE}" SSE3_TRUE)
-    IF (SSE3_TRUE)
-        set(SSE3_FOUND true CACHE BOOL "SSE3 available on host")
-    ELSE (SSE3_TRUE)
-        set(SSE3_FOUND false CACHE BOOL "SSE3 available on host")
-    ENDIF (SSE3_TRUE)
-
-    STRING(REGEX REPLACE "^.*(SSSE3).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "SSSE3" "${SSE_THERE}" SSSE3_TRUE)
-    IF (SSSE3_TRUE)
-        set(SSSE3_FOUND true CACHE BOOL "SSSE3 available on host")
-    ELSE (SSSE3_TRUE)
-        set(SSSE3_FOUND false CACHE BOOL "SSSE3 available on host")
-    ENDIF (SSSE3_TRUE)
-
-    STRING(REGEX REPLACE "^.*(SSE4.1).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "SSE4.1" "${SSE_THERE}" SSE41_TRUE)
-    IF (SSE41_TRUE)
-        set(SSE4_1_FOUND true CACHE BOOL "SSE4.1 available on host")
-    ELSE (SSE41_TRUE)
-        set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
-    ENDIF (SSE41_TRUE)
-
-    STRING(REGEX REPLACE "^.*(AVX).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "AVX" "${SSE_THERE}" AVX_TRUE)
-    IF (AVX_TRUE)
-        set(AVX_FOUND true CACHE BOOL "AVX available on host")
-    ELSE (AVX_TRUE)
-        set(AVX_FOUND false CACHE BOOL "AVX available on host")
-    ENDIF (AVX_TRUE)
-
-    STRING(REGEX REPLACE "^.*(AVX2).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "AVX2" "${SSE_THERE}" AVX2_TRUE)
-    IF (AVX2_TRUE)
-        set(AVX2_FOUND true CACHE BOOL "AVX2 available on host")
-    ELSE (AVX2_TRUE)
-        set(AVX2_FOUND false CACHE BOOL "AVX2 available on host")
-    ENDIF (AVX2_TRUE)
-
-    STRING(REGEX REPLACE "^.*(AVX512).*$" "\\1" SSE_THERE ${CPUINFO})
-    STRING(COMPARE EQUAL "AVX512" "${SSE_THERE}" AVX2_TRUE)
-    IF (AVX2_TRUE)
-        set(AVX2_FOUND true CACHE BOOL "AVX512 available on host")
-    ELSE (AVX2_TRUE)
-        set(AVX2_FOUND false CACHE BOOL "AVX512 available on host")
-    ENDIF (AVX2_TRUE)
-
-ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Windows")
-    # TODO
-    set(SSE2_FOUND   true  CACHE BOOL "SSE2 available on host")
-    set(SSE3_FOUND   false CACHE BOOL "SSE3 available on host")
-    set(SSSE3_FOUND  false CACHE BOOL "SSSE3 available on host")
-    set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
-    set(AVX_FOUND false CACHE BOOL "AVX available on host")
-    set(AVX2_FOUND false CACHE BOOL "AVX2 available on host")
-    set(AVX512_FOUND false CACHE BOOL "AVX512 available on host")
-ELSE(CMAKE_SYSTEM_NAME MATCHES "Linux")
-    set(SSE2_FOUND   true  CACHE BOOL "SSE2 available on host")
-    set(SSE3_FOUND   false CACHE BOOL "SSE3 available on host")
-    set(SSSE3_FOUND  false CACHE BOOL "SSSE3 available on host")
-    set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
-    set(AVX_FOUND false CACHE BOOL "AVX available on host")
-    set(AVX2_FOUND false CACHE BOOL "AVX2 available on host")
-    set(AVX512_FOUND false CACHE BOOL "AVX512 available on host")
-ENDIF(CMAKE_SYSTEM_NAME MATCHES "Linux")
-
-if(NOT SSE2_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for SSE2 on this machine.")
-endif(NOT SSE2_FOUND)
-if(NOT SSE3_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for SSE3 on this machine.")
-endif(NOT SSE3_FOUND)
-if(NOT SSSE3_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for SSSE3 on this machine.")
-endif(NOT SSSE3_FOUND)
-if(NOT SSE4_1_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for SSE4.1 on this machine.")
-endif(NOT SSE4_1_FOUND)
-if(NOT AVX_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for AVX on this machine.")
-endif(NOT AVX_FOUND)
-if(NOT AVX2_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for AVX2 on this machine.")
-endif(NOT AVX2_FOUND)
-if(NOT AVX512_FOUND)
-    MESSAGE(STATUS "Could not find hardware support for AVX512 on this machine.")
-endif(NOT AVX512_FOUND)
-mark_as_advanced(SSE2_FOUND SSE3_FOUND SSSE3_FOUND SSE4_1_FOUND, AVX_FOUND, AVX2_FOUND)
diff --git a/client/deps/hardnested.cmake b/client/deps/hardnested.cmake
index 6559f4faa..b9ca14dab 100644
--- a/client/deps/hardnested.cmake
+++ b/client/deps/hardnested.cmake
@@ -1,22 +1,25 @@
 set_property(SOURCE PROPERTY C_STANDARD 99)
 
-## CPU-specific code
-## These are mostly for x86-based architectures, which is not useful for many Android devices.
 add_library(hardnested_nosimd OBJECT
         hardnested/hardnested_bf_core.c
         hardnested/hardnested_bitarray_core.c)
 
+target_compile_options(hardnested_nosimd PRIVATE -Wall -Werror -O3)
+
 target_include_directories(hardnested_nosimd PRIVATE
         ../../common
         ../../include)
-target_compile_options(hardnested_nosimd PRIVATE -Wall -Werror -O3)
 
-set(X86_CPUS x86 x86_64 i686)
+## CPU-specific code
+## These are mostly for x86-based architectures, which is not useful for many Android devices.
+## Mingw platforms: AMD64
+set(X86_CPUS x86 x86_64 i686 AMD64)
 
 message(STATUS "CMAKE_SYSTEM_PROCESSOR := ${CMAKE_SYSTEM_PROCESSOR}")
 
 if ("${CMAKE_SYSTEM_PROCESSOR}" IN_LIST X86_CPUS)
     message(STATUS "Building optimised x86/x86_64 binaries")
+
     target_compile_options(hardnested_nosimd BEFORE PRIVATE
             -mno-mmx -mno-sse2 -mno-avx -mno-avx2 -mno-avx512f)