diff --git a/boards/nordic/nrf54h20dk/Kconfig.defconfig b/boards/nordic/nrf54h20dk/Kconfig.defconfig
index 60c9345eb04..038e2ad9293 100644
--- a/boards/nordic/nrf54h20dk/Kconfig.defconfig
+++ b/boards/nordic/nrf54h20dk/Kconfig.defconfig
@@ -24,6 +24,6 @@ config ROM_START_OFFSET
 	default 0x800 if BOOTLOADER_MCUBOOT
 
 config FLASH_LOAD_OFFSET
-	default 0x2c000 if !USE_DT_CODE_PARTITION
+	default 0x30000 if !USE_DT_CODE_PARTITION
 
 endif # BOARD_NRF54H20DK_NRF54H20_CPUAPP_IRON
diff --git a/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20-memory_map_iron.dtsi b/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20-memory_map_iron.dtsi
index 2977e83758b..2ecec360694 100644
--- a/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20-memory_map_iron.dtsi
+++ b/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20-memory_map_iron.dtsi
@@ -69,16 +69,16 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		cpuapp_boot_partition: partition@2c000 {
-			reg = <0x2c000 DT_SIZE_K(64)>;
+		cpuapp_boot_partition: partition@30000 {
+			reg = <0x30000 DT_SIZE_K(64)>;
 		};
 
-		cpuapp_slot0_partition: partition@3c000 {
-			reg = <0x3c000 DT_SIZE_K(336)>;
+		cpuapp_slot0_partition: partition@40000 {
+			reg = <0x40000 DT_SIZE_K(328)>;
 		};
 
-		cpurad_slot0_partition: partition@90000 {
-			reg = <0x90000 DT_SIZE_K(336)>;
+		cpurad_slot0_partition: partition@92000 {
+			reg = <0x92000 DT_SIZE_K(328)>;
 		};
 
 		cpuppr_code_partition: partition@e4000 {
@@ -90,15 +90,15 @@
 		};
 
 		cpuapp_slot1_partition: partition@100000 {
-			reg = <0x100000 DT_SIZE_K(336)>;
+			reg = <0x100000 DT_SIZE_K(328)>;
 		};
 
-		cpurad_slot1_partition: partition@154000 {
-			reg = <0x154000 DT_SIZE_K(336)>;
+		cpurad_slot1_partition: partition@152000 {
+			reg = <0x152000 DT_SIZE_K(328)>;
 		};
 
-		storage_partition: partition@1a8000 {
-			reg = <0x1a8000 DT_SIZE_K(40)>;
+		storage_partition: partition@1a4000 {
+			reg = <0x1a4000 DT_SIZE_K(40)>;
 		};
 	};
 };
diff --git a/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuapp_iron_0_9_0.yaml b/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuapp_iron_0_9_0.yaml
index eefca56fe0c..fa64abbd3a4 100644
--- a/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuapp_iron_0_9_0.yaml
+++ b/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuapp_iron_0_9_0.yaml
@@ -11,7 +11,7 @@ toolchain:
   - zephyr
 sysbuild: true
 ram: 256
-flash: 480
+flash: 392
 supported:
   - adc
   - can
diff --git a/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpurad_iron_0_9_0.yaml b/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpurad_iron_0_9_0.yaml
index ef71cfa924c..eae5f08a090 100644
--- a/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpurad_iron_0_9_0.yaml
+++ b/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpurad_iron_0_9_0.yaml
@@ -11,7 +11,7 @@ toolchain:
   - zephyr
 sysbuild: true
 ram: 192
-flash: 336
+flash: 328
 supported:
   - counter
   - gpio