diff --git a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52833dk_nrf52833/sysbuild_release.conf b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52833dk_nrf52833/sysbuild_release.conf
index eaafb07f77ff..e24cd0508630 100644
--- a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52833dk_nrf52833/sysbuild_release.conf
+++ b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52833dk_nrf52833/sysbuild_release.conf
@@ -6,3 +6,4 @@
 
 SB_CONFIG_BOOTLOADER_MCUBOOT=y
 SB_CONFIG_MCUBOOT_MODE_DIRECT_XIP=y
+SB_CONFIG_BOOT_SIGNATURE_TYPE_RSA=y
diff --git a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52840dk_nrf52840/sysbuild.conf b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52840dk_nrf52840/sysbuild.conf
index eaafb07f77ff..e24cd0508630 100644
--- a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52840dk_nrf52840/sysbuild.conf
+++ b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52840dk_nrf52840/sysbuild.conf
@@ -6,3 +6,4 @@
 
 SB_CONFIG_BOOTLOADER_MCUBOOT=y
 SB_CONFIG_MCUBOOT_MODE_DIRECT_XIP=y
+SB_CONFIG_BOOT_SIGNATURE_TYPE_RSA=y
diff --git a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52dk_nrf52832/sysbuild_release.conf b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52dk_nrf52832/sysbuild_release.conf
index eaafb07f77ff..e24cd0508630 100644
--- a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52dk_nrf52832/sysbuild_release.conf
+++ b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf52dk_nrf52832/sysbuild_release.conf
@@ -6,3 +6,4 @@
 
 SB_CONFIG_BOOTLOADER_MCUBOOT=y
 SB_CONFIG_MCUBOOT_MODE_DIRECT_XIP=y
+SB_CONFIG_BOOT_SIGNATURE_TYPE_RSA=y
diff --git a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf5340dk_nrf5340_cpuapp/sysbuild.conf b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf5340dk_nrf5340_cpuapp/sysbuild.conf
index 99ac6bded98b..0e47bedc9ae6 100644
--- a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf5340dk_nrf5340_cpuapp/sysbuild.conf
+++ b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf5340dk_nrf5340_cpuapp/sysbuild.conf
@@ -9,6 +9,7 @@ SB_CONFIG_NETCORE_IPC_RADIO=y
 SB_CONFIG_BOOTLOADER_MCUBOOT=y
 SB_CONFIG_MCUBOOT_MODE_OVERWRITE_ONLY=y
 SB_CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
+SB_CONFIG_BOOT_SIGNATURE_TYPE_RSA=y
 
 SB_CONFIG_SECURE_BOOT_NETCORE=y
 SB_CONFIG_NETCORE_APP_UPDATE=y
diff --git a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf5340dk_nrf5340_cpuapp_ns/sysbuild.conf b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf5340dk_nrf5340_cpuapp_ns/sysbuild.conf
index f60ca164d19f..1c939627d7cd 100644
--- a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf5340dk_nrf5340_cpuapp_ns/sysbuild.conf
+++ b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf5340dk_nrf5340_cpuapp_ns/sysbuild.conf
@@ -10,6 +10,7 @@ SB_CONFIG_BOOTLOADER_MCUBOOT=y
 SB_CONFIG_MCUBOOT_MODE_OVERWRITE_ONLY=y
 SB_CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
 SB_CONFIG_MCUBOOT_USE_ALL_AVAILABLE_RAM=y
+SB_CONFIG_BOOT_SIGNATURE_TYPE_RSA=y
 
 SB_CONFIG_SECURE_BOOT_NETCORE=y
 SB_CONFIG_NETCORE_APP_UPDATE=y
diff --git a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf54l15dk_nrf54l15_cpuapp/sysbuild.conf b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf54l15dk_nrf54l15_cpuapp/sysbuild.conf
index eaafb07f77ff..e24cd0508630 100644
--- a/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf54l15dk_nrf54l15_cpuapp/sysbuild.conf
+++ b/samples/bluetooth/fast_pair/locator_tag/sysbuild/configuration/nrf54l15dk_nrf54l15_cpuapp/sysbuild.conf
@@ -6,3 +6,4 @@
 
 SB_CONFIG_BOOTLOADER_MCUBOOT=y
 SB_CONFIG_MCUBOOT_MODE_DIRECT_XIP=y
+SB_CONFIG_BOOT_SIGNATURE_TYPE_RSA=y