diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index eb442d58b8fb..ab4643f86771 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -4137,3 +4137,8 @@ static_assert(_PLUS_TEST(4), "HOMING_FEEDRATE_MM_M values must be positive.");
 #elif ENABLED(DISABLE_JTAG) && !defined(JTAG_DISABLE)
   #error "DISABLE_JTAG is not supported for the selected MCU/Board."
 #endif
+
+// Check requirements for upload.py
+#if ENABLED(XFER_BUILD) && !BOTH(BINARY_FILE_TRANSFER, CUSTOM_FIRMWARE_UPLOAD)
+  #error "BINARY_FILE_TRANSFER and CUSTOM_FIRMWARE_UPLOAD are required for custom upload."
+#endif
diff --git a/Marlin/src/pins/pins.h b/Marlin/src/pins/pins.h
index da2075911433..e1849c509d2c 100644
--- a/Marlin/src/pins/pins.h
+++ b/Marlin/src/pins/pins.h
@@ -538,7 +538,7 @@
 #elif MB(BTT_SKR_MINI_E3_V2_0)
   #include "stm32f1/pins_BTT_SKR_MINI_E3_V2_0.h"  // STM32F1                              env:STM32F103RC_btt env:STM32F103RC_btt_USB env:STM32F103RE_btt env:STM32F103RE_btt_USB env:STM32F103RC_btt_maple env:STM32F103RC_btt_USB_maple env:STM32F103RE_btt_maple env:STM32F103RE_btt_USB_maple
 #elif MB(BTT_SKR_MINI_E3_V3_0)
-  #include "stm32g0/pins_BTT_SKR_MINI_E3_V3_0.h"  // STM32G0                              env:STM32G0B1RE_btt
+  #include "stm32g0/pins_BTT_SKR_MINI_E3_V3_0.h"  // STM32G0                              env:STM32G0B1RE_btt env:STM32G0B1RE_btt_xfer
 #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_USB env:STM32F103RC_btt_maple env:STM32F103RC_btt_USB_maple
 #elif MB(BTT_SKR_E3_DIP)
diff --git a/ini/stm32f1.ini b/ini/stm32f1.ini
index 6bf6a1cb851c..7493e3682ce5 100644
--- a/ini/stm32f1.ini
+++ b/ini/stm32f1.ini
@@ -138,6 +138,7 @@ upload_protocol             = jlink
 #
 [STM32F103Rx_creality_xfer]
 extends         = STM32F103Rx_creality
+build_flags     = ${STM32F103Rx_creality.build_flags} -DXFER_BUILD
 extra_scripts   = ${STM32F103Rx_creality.extra_scripts}
                   pre:buildroot/share/scripts/upload.py
 upload_protocol = custom
diff --git a/ini/stm32g0.ini b/ini/stm32g0.ini
index e6094c1e312d..b6074d3af8d0 100644
--- a/ini/stm32g0.ini
+++ b/ini/stm32g0.ini
@@ -36,3 +36,13 @@ build_flags                 = ${stm32_variant.build_flags}
                             -DSTEP_TIMER_IRQ_PRIO=0
 upload_protocol             = stlink
 debug_tool                  = stlink
+
+#
+# Custom upload to SD via Marlin with Binary Protocol
+#
+[env:STM32G0B1RE_btt_xfer]
+extends         = env:STM32G0B1RE_btt
+build_flags     = ${env:STM32G0B1RE_btt.build_flags} -DXFER_BUILD
+extra_scripts   = ${env:STM32G0B1RE_btt.extra_scripts}
+                  pre:buildroot/share/scripts/upload.py
+upload_protocol = custom