diff --git a/boot/zephyr/boards/thingy91x_nrf5340_cpuapp.conf b/boot/zephyr/boards/thingy91x_nrf5340_cpuapp.conf
new file mode 100644
index 000000000..72dfa7fca
--- /dev/null
+++ b/boot/zephyr/boards/thingy91x_nrf5340_cpuapp.conf
@@ -0,0 +1,54 @@
+# MCUBoot settings
+CONFIG_BOOT_MAX_IMG_SECTORS=110
+
+# MCUboot serial recovery
+CONFIG_MCUBOOT_SERIAL=y
+
+# Disable Zephyr console
+CONFIG_LOG=n
+CONFIG_CONSOLE=n
+CONFIG_CONSOLE_HANDLER=n
+CONFIG_UART_CONSOLE=n
+
+# Serial
+CONFIG_SERIAL=y
+CONFIG_UART_NRFX=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+CONFIG_UART_LINE_CTRL=y
+
+# MCUboot serial recovery
+CONFIG_GPIO=y
+CONFIG_MCUBOOT_SERIAL=y
+CONFIG_BOOT_SERIAL_CDC_ACM=y
+
+# Required by USB
+CONFIG_MULTITHREADING=y
+
+# USB
+CONFIG_USB_DEVICE_STACK=y
+CONFIG_USB_DEVICE_PRODUCT="MCUBOOT"
+CONFIG_USB_CDC_ACM=y
+CONFIG_USB_COMPOSITE_DEVICE=y
+CONFIG_USB_MASS_STORAGE=n
+CONFIG_USB_DEVICE_MANUFACTURER="Nordic Semiconductor"
+CONFIG_USB_DEVICE_VID=0x1915
+CONFIG_USB_DEVICE_PID=0x520F
+
+CONFIG_BOOT_SERIAL_BOOT_MODE=y
+
+CONFIG_PM_PARTITION_SIZE_MCUBOOT=0x13E00
+
+# The following configurations are required to support simultaneous multi image update
+CONFIG_PCD_APP=y
+CONFIG_UPDATEABLE_IMAGE_NUMBER=2
+CONFIG_BOOT_UPGRADE_ONLY=y
+# The network core cannot access external flash directly. The flash simulator must be used to
+# provide a memory region that is used to forward the new firmware to the network core.
+CONFIG_FLASH_SIMULATOR=y
+CONFIG_FLASH_SIMULATOR_DOUBLE_WRITES=y
+CONFIG_FLASH_SIMULATOR_STATS=n
+
+CONFIG_BOOT_IMAGE_ACCESS_HOOKS=y
+CONFIG_MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD=y
+
+CONFIG_NRF53_RECOVERY_NETWORK_CORE=y
diff --git a/boot/zephyr/boards/thingy91x_nrf9161.conf b/boot/zephyr/boards/thingy91x_nrf9161.conf
new file mode 100644
index 000000000..33cd3301c
--- /dev/null
+++ b/boot/zephyr/boards/thingy91x_nrf9161.conf
@@ -0,0 +1,8 @@
+# MCUBoot settings
+CONFIG_BOOT_MAX_IMG_SECTORS=512
+
+CONFIG_SPI=y
+CONFIG_SPI_NOR=y
+CONFIG_SPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096
+CONFIG_SPI_NOR_SFDP_DEVICETREE=y
+CONFIG_MULTITHREADING=y