diff --git a/samples/suit/flash_companion/boards/nrf54h20dk_nrf54h20_cpuapp.overlay b/samples/suit/flash_companion/boards/nrf54h20dk_nrf54h20_cpuapp.overlay
index afbf08643e14..75bbb1dface2 100644
--- a/samples/suit/flash_companion/boards/nrf54h20dk_nrf54h20_cpuapp.overlay
+++ b/samples/suit/flash_companion/boards/nrf54h20dk_nrf54h20_cpuapp.overlay
@@ -53,48 +53,6 @@
 	};
 };
 
-/* Legacy exmif driver overlay - currently needed for DFU from extmem */
-
-/delete-node/ &exmif;
-
-&global_peripherals {
-	exmif: spi@95000 {
-		compatible = "nordic,nrf-exmif-spi", "snps,designware-spi";
-		pinctrl-0 = <&exmif_default>;
-		pinctrl-names = "default";
-		#address-cells = <1>;
-		#size-cells = <0>;
-		reg = <0x95000 0x500 0x95500 0xb00>;
-		reg-names = "wrapper", "core";
-		interrupts = <149 NRF_DEFAULT_IRQ_PRIORITY>;
-		power-domains = <&gpd NRF_GPD_FAST_ACTIVE0>;
-		clock-frequency = <DT_FREQ_M(400)>;
-		fifo-depth = <32>;
-		max-xfer-size = <16>;
-		cs-gpios = <&gpio6 3 GPIO_ACTIVE_LOW>;
-	};
-};
-
-&exmif {
-	mx25uw63: mx25uw6345g@0 {
-		compatible = "jedec,spi-nor";
-		reg = <0>;
-		spi-max-frequency = <DT_FREQ_M(48)>;
-		jedec-id = [c2 84 37];
-		sfdp-bfp = [
-			e5 20 8a ff  ff ff ff 03  00 ff 00 ff  00 ff 00 ff
-			ee ff ff ff  ff ff 00 ff  ff ff 00 ff  0c 20 10 d8
-			00 ff 00 ff  87 79 01 00  84 12 00 c4  cc 04 67 46
-			30 b0 30 b0  f4 bd d5 5c  00 00 00 ff  10 10 00 20
-			00 00 00 00  00 00 7c 23  48 00 00 00  00 00 88 88
-		];
-		size = <67108864>;
-		has-dpd;
-		t-enter-dpd = <10000>;
-		t-exit-dpd = <30000>;
-	};
-};
-
 &mx25uw63 {
 	status = "okay";
 };
diff --git a/samples/suit/flash_companion/prj.conf b/samples/suit/flash_companion/prj.conf
index 02c6f19412f3..0ca362bcf78b 100644
--- a/samples/suit/flash_companion/prj.conf
+++ b/samples/suit/flash_companion/prj.conf
@@ -11,6 +11,8 @@ CONFIG_NUM_COOP_PRIORITIES=16
 CONFIG_NUM_METAIRQ_PRIORITIES=0
 CONFIG_SCHED_DUMB=y
 CONFIG_WAITQ_DUMB=y
+CONFIG_TICKLESS_KERNEL=n
+CONFIG_SSF_DEVICE_INFO_SERVICE_ENABLED=n
 
 # Enable peripherals needed by the flash companion firmware
 CONFIG_GPIO=y
@@ -45,6 +47,7 @@ CONFIG_NCS_BOOT_BANNER=n
 CONFIG_BOOT_DELAY=0
 
 # Disable serial communication
+CONFIG_SERIAL=n
 CONFIG_CONSOLE=n
 CONFIG_UART_CONSOLE=n
 CONFIG_STDOUT_CONSOLE=n
@@ -78,3 +81,7 @@ CONFIG_CLOCK_CONTROL=n
 # Set flash base address to zero to ensure that the executable
 # code is placed in CPUAPP RAM by the linker.
 CONFIG_FLASH_BASE_ADDRESS=0x0
+CONFIG_COMMON_LIBC_MALLOC=n
+CONFIG_COMMON_LIBC_CALLOC=n
+CONFIG_COMMON_LIBC_REALLOCARRAY=n
+CONFIG_PICOLIBC_IO_LONG_LONG=n
diff --git a/samples/suit/smp_transfer/boards/nrf54h20dk_nrf54h20_cpuapp_extflash.overlay b/samples/suit/smp_transfer/boards/nrf54h20dk_nrf54h20_cpuapp_extflash.overlay
index c172887b1649..7943b54c48e9 100644
--- a/samples/suit/smp_transfer/boards/nrf54h20dk_nrf54h20_cpuapp_extflash.overlay
+++ b/samples/suit/smp_transfer/boards/nrf54h20dk_nrf54h20_cpuapp_extflash.overlay
@@ -10,57 +10,6 @@
 	};
 };
 
-/* Legacy exmif driver overlay - currently needed for DFU from extmem */
-
-&exmif_default {
-	group1 {
-		psels = <NRF_PSEL(EXMIF_CK, 6, 0)>,
-			<NRF_PSEL(EXMIF_DQ0, 6, 7)>,
-			<NRF_PSEL(EXMIF_DQ1, 6, 5)>;
-		nordic,drive-mode = <NRF_DRIVE_H0H1>;
-	};
-};
-
-/delete-node/ &exmif;
-
-&global_peripherals {
-	exmif: spi@95000 {
-		compatible = "nordic,nrf-exmif-spi", "snps,designware-spi";
-		pinctrl-0 = <&exmif_default>;
-		pinctrl-names = "default";
-		#address-cells = <1>;
-		#size-cells = <0>;
-		reg = <0x95000 0x500 0x95500 0xb00>;
-		reg-names = "wrapper", "core";
-		interrupts = <149 NRF_DEFAULT_IRQ_PRIORITY>;
-		power-domains = <&gpd NRF_GPD_FAST_ACTIVE0>;
-		clock-frequency = <DT_FREQ_M(400)>;
-		fifo-depth = <32>;
-		max-xfer-size = <16>;
-		cs-gpios = <&gpio6 3 GPIO_ACTIVE_LOW>;
-	};
-};
-
-&exmif {
-	mx25uw63: mx25uw6345g@0 {
-		compatible = "jedec,spi-nor";
-		reg = <0>;
-		spi-max-frequency = <DT_FREQ_M(48)>;
-		jedec-id = [c2 84 37];
-		sfdp-bfp = [
-			e5 20 8a ff  ff ff ff 03  00 ff 00 ff  00 ff 00 ff
-			ee ff ff ff  ff ff 00 ff  ff ff 00 ff  0c 20 10 d8
-			00 ff 00 ff  87 79 01 00  84 12 00 c4  cc 04 67 46
-			30 b0 30 b0  f4 bd d5 5c  00 00 00 ff  10 10 00 20
-			00 00 00 00  00 00 7c 23  48 00 00 00  00 00 88 88
-		];
-		size = <67108864>;
-		has-dpd;
-		t-enter-dpd = <10000>;
-		t-exit-dpd = <30000>;
-	};
-};
-
 &mx25uw63 {
 	status = "okay";
 	partitions {
diff --git a/west.yml b/west.yml
index bfe2070224bd..e069cce33011 100644
--- a/west.yml
+++ b/west.yml
@@ -65,7 +65,7 @@ manifest:
     # https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/modules.html
     - name: zephyr
       repo-path: sdk-zephyr
-      revision: 9018ae510c046e98478cfc74ddcea21bd56e3cd9
+      revision: 1d7723ad7b3e70b9b5ab1fb85d955c527cc0fa33
       import:
         # In addition to the zephyr repository itself, NCS also
         # imports the contents of zephyr/west.yml at the above