diff --git a/platformio.ini b/platformio.ini
index 2cf36a3b..2db8ecff 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -63,7 +63,31 @@ lib_ignore =
     ESP32NetBIOS
     ESP32SSPD
 
-[env:esp01s_160mhz]
+;https://github.com/platformio/platform-espressif8266/releases
+[env:esp01s_160mhz-2.7.4]
+platform = espressif8266@2.6.2
+board = esp01_1m
+framework = arduino
+monitor_speed = 115200
+monitor_flags = --echo
+monitor_filters = colorize
+board_build.f_cpu = 160000000L
+board_build.f_flash = 40000000L
+board_build.flash_mode = dout
+board_build.ldscript = eagle.flash.1m256.ld
+upload_resetmethod = nodemcu
+build_flags =
+    -D PIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY
+    -DNONOSDK221=1
+    -DNDEBUG
+    -DVTABLES_IN_FLASH
+upload_speed = 115200
+lib_ignore =
+    AsyncTCP
+    ESP32NetBIOS
+    ESP32SSPD
+
+[env:esp01s_160mhz-2.5.2]
 platform = espressif8266@2.2.0
 platform_packages = toolchain-xtensa@2.40802.200502
 board = esp01_1m
@@ -86,25 +110,3 @@ lib_ignore =
     AsyncTCP
     ESP32NetBIOS
     ESP32SSPD
-
-[env:esp01s_80mhz]
-platform = espressif8266@2.2.0
-platform_packages = toolchain-xtensa@2.40802.200502
-board = esp01_1m
-framework = arduino
-monitor_speed = 115200
-monitor_flags = --echo
-monitor_filters = colorize
-board_build.flash_mode = dout
-board_build.ldscript = eagle.flash.1m256.ld
-upload_resetmethod = nodemcu
-build_flags =
-    -D PIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY
-    -DNONOSDK221=1
-    -DNDEBUG
-    -DVTABLES_IN_FLASH
-upload_speed = 115200
-lib_ignore =
-    AsyncTCP
-    ESP32NetBIOS
-    ESP32SSPD