diff --git a/boards/arm/thingy53_nrf5340/Kconfig.defconfig b/boards/arm/thingy53_nrf5340/Kconfig.defconfig
index 6384d163d93..b6080de9a80 100644
--- a/boards/arm/thingy53_nrf5340/Kconfig.defconfig
+++ b/boards/arm/thingy53_nrf5340/Kconfig.defconfig
@@ -8,6 +8,12 @@ if BOARD_THINGY53_NRF5340_CPUAPP || BOARD_THINGY53_NRF5340_CPUAPP_NS
 config BOARD
 	default "thingy53_nrf5340_cpuapp"
 
+config BOOTLOADER_MCUBOOT
+	default y if !MCUBOOT
+
+config BOARD_ENABLE_CPUNET
+	default y if !MCUBOOT
+
 # Code Partition:
 #
 # For the secure version of the board the firmware is linked at the beginning
diff --git a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dtsi b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dtsi
index 341bb1305e1..515fc3bea7b 100644
--- a/boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dtsi
+++ b/boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dtsi
@@ -16,6 +16,7 @@
 		zephyr,bt-hci-rpmsg-ipc = &ipc0;
 		nordic,802154-spinel-ipc = &ipc0;
 		zephyr,ieee802154 = &ieee802154;
+		nordic,pm-ext-flash = &mx25r64;
 	};
 
 	buttons {