diff --git a/applications/asset_tracker_v2/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf b/applications/asset_tracker_v2/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
index 5558a0e48d46..7c2042de649c 100644
--- a/applications/asset_tracker_v2/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
+++ b/applications/asset_tracker_v2/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
@@ -17,3 +17,5 @@ CONFIG_BOOT_SERIAL_IMG_GRP_IMAGE_STATE=y
 
 CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
 CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y
+
+CONFIG_FW_INFO_FIRMWARE_VERSION=2
diff --git a/applications/asset_tracker_v2/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay b/applications/asset_tracker_v2/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
new file mode 100644
index 000000000000..7f2818c0d280
--- /dev/null
+++ b/applications/asset_tracker_v2/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
@@ -0,0 +1,4 @@
+&uart0 {
+	status = "okay";
+	current-speed = < 1000000 >;
+};
diff --git a/applications/connectivity_bridge/sysbuild/mcuboot/boards/thingy91x_nrf5340_cpuapp.conf b/applications/connectivity_bridge/sysbuild/mcuboot/boards/thingy91x_nrf5340_cpuapp.conf
index 8bbd4ddf9454..b2d427d17a8b 100644
--- a/applications/connectivity_bridge/sysbuild/mcuboot/boards/thingy91x_nrf5340_cpuapp.conf
+++ b/applications/connectivity_bridge/sysbuild/mcuboot/boards/thingy91x_nrf5340_cpuapp.conf
@@ -60,3 +60,5 @@ CONFIG_BOOT_SERIAL_IMG_GRP_IMAGE_STATE=y
 CONFIG_MCUBOOT_VERIFY_IMG_ADDRESS=n
 
 CONFIG_BOOT_SERIAL_NO_APPLICATION=y
+
+CONFIG_FW_INFO_FIRMWARE_VERSION=2
diff --git a/applications/serial_lte_modem/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf b/applications/serial_lte_modem/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
index d8ebd794fa15..7c2042de649c 100644
--- a/applications/serial_lte_modem/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
+++ b/applications/serial_lte_modem/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
@@ -14,3 +14,8 @@ CONFIG_UART_CONSOLE=n
 CONFIG_MCUBOOT_SERIAL=y
 CONFIG_MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD=y
 CONFIG_BOOT_SERIAL_IMG_GRP_IMAGE_STATE=y
+
+CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
+CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y
+
+CONFIG_FW_INFO_FIRMWARE_VERSION=2
diff --git a/applications/serial_lte_modem/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay b/applications/serial_lte_modem/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
new file mode 100644
index 000000000000..7f2818c0d280
--- /dev/null
+++ b/applications/serial_lte_modem/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
@@ -0,0 +1,4 @@
+&uart0 {
+	status = "okay";
+	current-speed = < 1000000 >;
+};
diff --git a/samples/cellular/nrf_cloud_multi_service/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf b/samples/cellular/nrf_cloud_multi_service/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
index d8ebd794fa15..7c2042de649c 100644
--- a/samples/cellular/nrf_cloud_multi_service/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
+++ b/samples/cellular/nrf_cloud_multi_service/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
@@ -14,3 +14,8 @@ CONFIG_UART_CONSOLE=n
 CONFIG_MCUBOOT_SERIAL=y
 CONFIG_MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD=y
 CONFIG_BOOT_SERIAL_IMG_GRP_IMAGE_STATE=y
+
+CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
+CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y
+
+CONFIG_FW_INFO_FIRMWARE_VERSION=2
diff --git a/samples/cellular/nrf_cloud_multi_service/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay b/samples/cellular/nrf_cloud_multi_service/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
new file mode 100644
index 000000000000..7f2818c0d280
--- /dev/null
+++ b/samples/cellular/nrf_cloud_multi_service/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
@@ -0,0 +1,4 @@
+&uart0 {
+	status = "okay";
+	current-speed = < 1000000 >;
+};
diff --git a/samples/net/aws_iot/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf b/samples/net/aws_iot/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
index d8ebd794fa15..7c2042de649c 100644
--- a/samples/net/aws_iot/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
+++ b/samples/net/aws_iot/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
@@ -14,3 +14,8 @@ CONFIG_UART_CONSOLE=n
 CONFIG_MCUBOOT_SERIAL=y
 CONFIG_MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD=y
 CONFIG_BOOT_SERIAL_IMG_GRP_IMAGE_STATE=y
+
+CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
+CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y
+
+CONFIG_FW_INFO_FIRMWARE_VERSION=2
diff --git a/samples/net/aws_iot/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay b/samples/net/aws_iot/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
new file mode 100644
index 000000000000..7f2818c0d280
--- /dev/null
+++ b/samples/net/aws_iot/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
@@ -0,0 +1,4 @@
+&uart0 {
+	status = "okay";
+	current-speed = < 1000000 >;
+};
diff --git a/samples/wifi/shell/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf b/samples/wifi/shell/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
index 1d0e3fb5273e..7c2042de649c 100644
--- a/samples/wifi/shell/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
+++ b/samples/wifi/shell/sysbuild/mcuboot/boards/thingy91x_nrf9151.conf
@@ -1,11 +1,3 @@
-#
-# Copyright (c) 2024 Nordic Semiconductor ASA
-#
-# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
-#
-
-# unmodified copy from mcuboot
-
 # MCUBoot settings
 CONFIG_BOOT_MAX_IMG_SECTORS=512
 
@@ -20,6 +12,10 @@ CONFIG_CONSOLE=n
 CONFIG_CONSOLE_HANDLER=n
 CONFIG_UART_CONSOLE=n
 CONFIG_MCUBOOT_SERIAL=y
-
 CONFIG_MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD=y
 CONFIG_BOOT_SERIAL_IMG_GRP_IMAGE_STATE=y
+
+CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
+CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y
+
+CONFIG_FW_INFO_FIRMWARE_VERSION=2
diff --git a/samples/wifi/shell/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay b/samples/wifi/shell/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
new file mode 100644
index 000000000000..7f2818c0d280
--- /dev/null
+++ b/samples/wifi/shell/sysbuild/mcuboot/boards/thingy91x_nrf9151.overlay
@@ -0,0 +1,4 @@
+&uart0 {
+	status = "okay";
+	current-speed = < 1000000 >;
+};