diff --git a/Marlin/src/pins/pins.h b/Marlin/src/pins/pins.h
index a1f45f577..4aec569ac 100644
--- a/Marlin/src/pins/pins.h
+++ b/Marlin/src/pins/pins.h
@@ -518,9 +518,9 @@
 #elif MB(BTT_SKR_MINI_MZ_V1_0)
   #include "stm32f1/pins_BTT_SKR_MINI_MZ_V1_0.h"  // STM32F1                              env:STM32F103RC_btt env:STM32F103RC_btt_512K env:STM32F103RC_btt_maple env:STM32F103RC_btt_512K_maple env:STM32F103RC_btt_USB_maple env:STM32F103RC_btt_512K_USB_maple
 #elif MB(BTT_SKR_E3_DIP)
-  #include "stm32f1/pins_BTT_SKR_E3_DIP.h"      // STM32F1                                env:STM32F103RE_btt env:STM32F103RE_btt_USB env:STM32F103RC_btt env:STM32F103RC_btt_512K
+  #include "stm32f1/pins_BTT_SKR_E3_DIP.h"      // STM32F1                                env:STM32F103RE_btt env:STM32F103RE_btt_USB env:STM32F103RE_btt_maple env:STM32F103RE_btt_USB_maple env:STM32F103RC_btt env:STM32F103RC_btt_512K
 #elif MB(BTT_SKR_CR6)
-  #include "stm32f1/pins_BTT_SKR_CR6.h"         // STM32F1                                env:STM32F103RE_btt env:STM32F103RE_btt_USB
+  #include "stm32f1/pins_BTT_SKR_CR6.h"         // STM32F1                                env:STM32F103RE_btt env:STM32F103RE_btt_USB env:STM32F103RE_btt_maple env:STM32F103RE_btt_USB_maple
 #elif MB(JGAURORA_A5S_A1)
   #include "stm32f1/pins_JGAURORA_A5S_A1.h"     // STM32F1                                env:jgaurora_a5s_a1
 #elif MB(FYSETC_AIO_II)
diff --git a/Marlin/src/pins/stm32f1/pins_BTT_SKR_E3_DIP.h b/Marlin/src/pins/stm32f1/pins_BTT_SKR_E3_DIP.h
index 50a533cde..35224ebdd 100644
--- a/Marlin/src/pins/stm32f1/pins_BTT_SKR_E3_DIP.h
+++ b/Marlin/src/pins/stm32f1/pins_BTT_SKR_E3_DIP.h
@@ -21,9 +21,7 @@
  */
 #pragma once
 
-#if NOT_TARGET(TARGET_STM32F1)
-  #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
-#endif
+#include "env_validate.h"
 
 #define BOARD_INFO_NAME "BTT SKR E3 DIP V1.x"
 
diff --git a/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_common.h b/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_common.h
index 58adc5853..bb356485c 100644
--- a/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_common.h
+++ b/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_common.h
@@ -21,9 +21,7 @@
  */
 #pragma once
 
-#if NOT_TARGET(__STM32F1__, STM32F1)
-  #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
-#endif
+#include "env_validate.h"
 
 // Release PB3/PB4 (E0 STP/DIR) from JTAG pins
 #define DISABLE_JTAG
diff --git a/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_V1_1.h b/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_V1_1.h
index 8668e1def..6b3d2832d 100644
--- a/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_V1_1.h
+++ b/Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_V1_1.h
@@ -21,9 +21,7 @@
  */
 #pragma once
 
-#if NOT_TARGET(TARGET_STM32F1)
-  #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
-#endif
+#include "env_validate.h"
 
 #define BOARD_INFO_NAME "BTT SKR Mini V1.1"
 
diff --git a/Marlin/src/pins/stm32f1/pins_CCROBOT_MEEB_3DP.h b/Marlin/src/pins/stm32f1/pins_CCROBOT_MEEB_3DP.h
index 43dfdece4..dc8b8c50f 100644
--- a/Marlin/src/pins/stm32f1/pins_CCROBOT_MEEB_3DP.h
+++ b/Marlin/src/pins/stm32f1/pins_CCROBOT_MEEB_3DP.h
@@ -21,9 +21,9 @@
  */
 #pragma once
 
-#if NOT_TARGET(TARGET_STM32F1)
-  #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
-#elif HOTENDS > 1 || E_STEPPERS > 1
+#include "env_validate.h"
+
+#if HOTENDS > 1 || E_STEPPERS > 1
   #error "CCROBOT-ONLINE MEEB_3DP only supports one hotend / E-stepper. Comment out this line to continue."
 #endif
 
diff --git a/ini/stm32f1-maple.ini b/ini/stm32f1-maple.ini
index ec72e8983..4daf04263 100644
--- a/ini/stm32f1-maple.ini
+++ b/ini/stm32f1-maple.ini
@@ -157,10 +157,10 @@ upload_protocol      = jlink
 #
 # BigTree SKR Mini E3 DIP / SKR CR6 (STM32F103RET6 ARM Cortex-M3)
 #
-#   STM32F103RE_btt ............. RET6
-#   STM32F103RE_btt_USB ......... RET6 (USB mass storage)
+#   STM32F103RE_btt_maple ............. RET6
+#   STM32F103RE_btt_USB_maple ......... RET6 (USB mass storage)
 #
-[env:STM32F103RE_btt]
+[env:STM32F103RE_btt_maple]
 platform          = ${common_stm32f1.platform}
 extends           = env:STM32F103RE_maple
 board_build.address  = 0x08007000
@@ -171,10 +171,10 @@ build_flags       = ${common_stm32f1.build_flags} -DDEBUG_LEVEL=0 -DSS_TIMER=4
 debug_tool        = stlink
 upload_protocol   = stlink
 
-[env:STM32F103RE_btt_USB]
+[env:STM32F103RE_btt_USB_maple]
 platform          = ${common_stm32f1.platform}
-extends           = env:STM32F103RE_btt
-build_flags       = ${env:STM32F103RE_btt.build_flags} -DUSE_USB_COMPOSITE
+extends           = env:STM32F103RE_btt_maple
+build_flags       = ${env:STM32F103RE_btt_maple.build_flags} -DUSE_USB_COMPOSITE
 lib_deps          = ${common_stm32f1.lib_deps}
   USBComposite for STM32F1@0.91
 
diff --git a/ini/stm32f1.ini b/ini/stm32f1.ini
index bbd203847..2e197ccb4 100644
--- a/ini/stm32f1.ini
+++ b/ini/stm32f1.ini
@@ -184,6 +184,43 @@ extra_scripts        = ${common.extra_scripts}
 debug_tool           = jlink
 upload_protocol      = jlink
 
+#
+# BigTree SKR Mini E3 DIP / SKR CR6 (STM32F103RET6 ARM Cortex-M3)
+#
+#   STM32F103RE_btt ............. RET6
+#   STM32F103RE_btt_USB ......... RET6 (USB mass storage)
+#
+[env:STM32F103RE_btt]
+platform             = ${common_stm32.platform}
+extends              = common_stm32
+build_flags          = ${common_stm32.build_flags} -DMCU_STM32F103RE -DHAL_SD_MODULE_ENABLED -DSS_TIMER=4 -DTIMER_SERVO=TIM5 -DENABLE_HWSERIAL3 -DTRANSFER_CLOCK_DIV=8
+board                = genericSTM32F103RE
+monitor_speed        = 115200
+board_build.core     = stm32
+board_build.variant  = MARLIN_F103Rx
+board_build.offset   = 0x7000
+board_build.ldscript = ldscript.ld
+board_upload.offset_address = 0x08007000
+build_unflags        = ${common_stm32.build_unflags}
+extra_scripts        = ${common.extra_scripts}
+  pre:buildroot/share/PlatformIO/scripts/generic_create_variant.py
+  buildroot/share/PlatformIO/scripts/stm32_bootloader.py
+debug_tool           = jlink
+upload_protocol      = jlink
+
+[env:STM32F103RE_btt_USB]
+extends           = env:STM32F103RE_btt
+platform          = ${common_stm32.platform}
+platform_packages = framework-arduinoststm32@https://github.com/rhapsodyv/Arduino_Core_STM32/archive/usb-host-msc-cdc-msc-2.zip
+build_unflags     = ${common_stm32.build_unflags} -DUSBD_USE_CDC
+build_flags       = ${env:STM32F103RE_btt.build_flags} ${env:stm32_flash_drive.build_flags}
+  -DUSBCON
+  -DUSE_USBHOST_HS
+  -DUSBD_IRQ_PRIO=5
+  -DUSBD_IRQ_SUBPRIO=6
+  -DUSE_USB_HS_IN_FS
+  -DUSBD_USE_CDC_MSC
+
 #
 # FLSUN QQS Pro (STM32F103VET6)
 # board Hispeedv1