diff --git a/firmware/firmware_d1_mini.bin b/firmware/firmware_d1_mini.bin
index dc55d9421..231f9bf6d 100644
Binary files a/firmware/firmware_d1_mini.bin and b/firmware/firmware_d1_mini.bin differ
diff --git a/firmware/firmware_d1_mini_pro.bin b/firmware/firmware_d1_mini_pro.bin
index f7cebe513..8303f1c92 100644
Binary files a/firmware/firmware_d1_mini_pro.bin and b/firmware/firmware_d1_mini_pro.bin differ
diff --git a/firmware/firmware_nodemcuv2.bin b/firmware/firmware_nodemcuv2.bin
index b43fdb4e2..fb4e19fc9 100644
Binary files a/firmware/firmware_nodemcuv2.bin and b/firmware/firmware_nodemcuv2.bin differ
diff --git a/platformio.ini-example b/platformio.ini-example
index 1e5e32ffe..4aefa5c35 100644
--- a/platformio.ini-example
+++ b/platformio.ini-example
@@ -6,7 +6,8 @@ env_default = d1_mini
 [common]
 platform = espressif8266
 flash_mode = dout
-; optional flags are -DDEBUG_SUPPORT
+;debug_mode = -DDEBUG_SUPPORT
+debug_mode =
 build_flags = -g -w
 lib_deps =
   CRC32
@@ -20,7 +21,7 @@ board = nodemcuv2
 platform = ${common.platform}
 framework = arduino
 lib_deps = ${common.lib_deps}
-build_flags = ${common.build_flags}
+build_flags = ${common.build_flags} ${common.debug_mode}
 board_build.flash_mode = ${common.flash_mode}
 upload_speed = 921600
 monitor_speed = 115200
@@ -32,7 +33,7 @@ board = d1_mini
 platform = ${common.platform}
 framework = arduino
 lib_deps = ${common.lib_deps}
-build_flags = ${common.build_flags}
+build_flags = ${common.build_flags} ${common.debug_mode}
 board_build.flash_mode = ${common.flash_mode}
 upload_speed = 921600
 monitor_speed = 115200