diff --git a/platformio.ini b/platformio.ini
index 5643e36e9..147b55cb8 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -18,7 +18,7 @@ core_build_flags =    -Wno-deprecated-declarations
 esp32_build_flags   = -DARDUINO_ARCH_ESP32=1
                       -DESP32=1
                       -DBOARD_HAS_PSRAM
-                      ; -std=c17 -std=c++17 -std=gnu++17  
+                    ; -std=c17 -std=c++17 -std=gnu++17  
 
 build_flags =
   ${common.core_build_flags}
@@ -39,13 +39,12 @@ build_unflags = -Wall
                 -Wdeprecated-declarations
 
 esp32_build_unflags = 
-    ; -std=gnu++11
+     ; -std=gnu++11
 
 debug_flags =
   ; -D EMSESP_DEBUG
   ; -D EMSESP_UART_DEBUG
   ; -D EMSESP_TEST
-  ; -D EMSESP_FORCE_SERIAL
   ; -D ENABLE_CORS
 
 [env]
@@ -78,7 +77,7 @@ extra_scripts =
   scripts/rename_fw.py
 board = esp32dev
 platform = espressif32
-; platform_packages =  framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#idf-release/v4.0
+;platform_packages =  framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#idf-release/v4.2
 ;                     ;  toolchain-xtensa32 @ 2.80200.200226
 ;                     ;  toolchain-xtensa32 @ 5.100200.201223
 ;                      toolchain-xtensa32 @ 2.80400.2020 ;  c70ec8a-toolchain-xtensa32-linux_x86_64-2.80400.2020.tar.gz