diff --git a/ports/stm32/boards/PYBD_SF2/mpconfigboard.mk b/ports/stm32/boards/PYBD_SF2/mpconfigboard.mk
index 69407345bd..ead8bb8c07 100644
--- a/ports/stm32/boards/PYBD_SF2/mpconfigboard.mk
+++ b/ports/stm32/boards/PYBD_SF2/mpconfigboard.mk
@@ -10,8 +10,9 @@ TEXT0_SECTIONS = .isr_vector .text .data
 TEXT1_SECTIONS = .text_ext
 
 # MicroPython settings
-MICROPY_PY_BLUETOOTH = 1
-MICROPY_BLUETOOTH_NIMBLE = 1
+MICROPY_PY_BLUETOOTH ?= 1
+MICROPY_BLUETOOTH_NIMBLE ?= 1
+MICROPY_BLUETOOTH_BTSTACK ?= 0
 MICROPY_PY_LWIP = 1
 MICROPY_PY_NETWORK_CYW43 = 1
 MICROPY_PY_USSL = 1
diff --git a/ports/stm32/boards/PYBD_SF3/mpconfigboard.mk b/ports/stm32/boards/PYBD_SF3/mpconfigboard.mk
index f6d6e955b6..119ec8f825 100644
--- a/ports/stm32/boards/PYBD_SF3/mpconfigboard.mk
+++ b/ports/stm32/boards/PYBD_SF3/mpconfigboard.mk
@@ -10,8 +10,9 @@ TEXT0_SECTIONS = .isr_vector .text .data
 TEXT1_SECTIONS = .text_ext
 
 # MicroPython settings
-MICROPY_PY_BLUETOOTH = 1
-MICROPY_BLUETOOTH_NIMBLE = 1
+MICROPY_PY_BLUETOOTH ?= 1
+MICROPY_BLUETOOTH_NIMBLE ?= 1
+MICROPY_BLUETOOTH_BTSTACK ?= 0
 MICROPY_PY_LWIP = 1
 MICROPY_PY_NETWORK_CYW43 = 1
 MICROPY_PY_USSL = 1
diff --git a/ports/stm32/boards/PYBD_SF6/mpconfigboard.mk b/ports/stm32/boards/PYBD_SF6/mpconfigboard.mk
index e33d62d86a..ddc176e9cd 100644
--- a/ports/stm32/boards/PYBD_SF6/mpconfigboard.mk
+++ b/ports/stm32/boards/PYBD_SF6/mpconfigboard.mk
@@ -7,8 +7,9 @@ LD_FILES = boards/PYBD_SF6/f767.ld
 TEXT0_ADDR = 0x08008000
 
 # MicroPython settings
-MICROPY_PY_BLUETOOTH = 1
-MICROPY_BLUETOOTH_NIMBLE = 1
+MICROPY_PY_BLUETOOTH ?= 1
+MICROPY_BLUETOOTH_NIMBLE ?= 1
+MICROPY_BLUETOOTH_BTSTACK ?= 0
 MICROPY_PY_LWIP = 1
 MICROPY_PY_NETWORK_CYW43 = 1
 MICROPY_PY_USSL = 1