MCU manager with STM32H750B_dk

[MaazSk]

I am using STM32H750B_DK which has an internal flash of 128K, I am trying to use smp_svr example located at subsys/mgmt/mcumgr/smpsvr My overlay file is as below

/ {
	chosen {
		zephyr,code-partition = &storage_partition;
	};
};


&flash0 {
	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		slot0_partition: partition@0 {
			label = "mcuboot";
			reg = <0x00000000 DT_SIZE_K(109)>;
		};
		storage_partition: partition@1B400 {
				label = "image-0";
				reg = <0x0001B400 DT_SIZE_M(22)>;
		};
	};
};


&quadspi {
	pinctrl-names = "default";
	pinctrl-0 = <&quadspi_clk_pf10 &quadspi_bk1_ncs_pg6
		     &quadspi_bk1_io0_pd11 &quadspi_bk1_io1_pf9
		     &quadspi_bk1_io2_pf7 &quadspi_bk1_io3_pf6
		     &quadspi_bk2_io0_ph2 &quadspi_bk2_io1_ph3
		     &quadspi_bk2_io2_pg9 &quadspi_bk2_io3_pg14>;
	dual-flash;
	status = "okay";

	mt25ql512ab1: qspi-nor-flash-1@90000000 {
		compatible = "st,stm32-qspi-nor";
		reg = <0x90000000 DT_SIZE_M(64)>; /* 512 Mbits */
		qspi-max-frequency = <72000000>;
		spi-bus-width = <4>;
		reset-cmd;
		reset-cmd-wait = <20>;
		status = "okay";

		partitions {
			compatible = "fixed-partitions";
			#address-cells = <1>;
			#size-cells = <1>;

			slot1_partition: partition@0 {
				label = "image-0";
				reg = <0x00000000 0x1000000>;
			};

			//slot3_partition: partition@1000000{
			//	label = "image-1";
			//	reg = <0x1000000 DT_SIZE_M(64)>;
			//};
		};
	};
};

I am able to build the code but I am unable to sign it because of the memory that I have. Also, I am unable the slots to external memory.

The error with the above overlay I get is as below
.

As it exceeded the memory location and If I change storage partition location to external flash I am unable to flash the code the error that I get is as follows Also the updated overlay is as

&quadspi {
	pinctrl-names = "default";
	pinctrl-0 = <&quadspi_clk_pf10 &quadspi_bk1_ncs_pg6
		     &quadspi_bk1_io0_pd11 &quadspi_bk1_io1_pf9
		     &quadspi_bk1_io2_pf7 &quadspi_bk1_io3_pf6
		     &quadspi_bk2_io0_ph2 &quadspi_bk2_io1_ph3
		     &quadspi_bk2_io2_pg9 &quadspi_bk2_io3_pg14>;
	dual-flash;
	status = "okay";

	mt25ql512ab1: qspi-nor-flash-1@90000000 {
		compatible = "st,stm32-qspi-nor";
		reg = <0x90000000 DT_SIZE_M(64)>; /* 512 Mbits */
		qspi-max-frequency = <72000000>;
		spi-bus-width = <4>;
		reset-cmd;
		reset-cmd-wait = <20>;
		status = "okay";

		partitions {
			compatible = "fixed-partitions";
			#address-cells = <1>;
			#size-cells = <1>;

			slot1_partition: partition@0 {
				label = "image-0";
				reg = <0x00000000 DT_SIZE_M(5)>;
			};

			storage_partition: partition@500000{
				label = "image-1";
				reg = <0x500000 DT_SIZE_M(5)>;
			};
		};
	};
};

What should be a way forward. Also, if I remove slot0 from internal flash to external flash I am unable to sign this is the error that I get

----UPDATE 1----
When I made the following changes I am able to sign the file even if I change the partition

/ {
	chosen {
		zephyr,code-partition = &slot0_partition;
		zephyr,flash-controller = &mt25ql512ab1;
		zephyr,flash = &mt25ql512ab1;
	};
};

----UPDATE 2----

I am able to update the code to the device but now I am having difficulty using AuTerm or zephyr mcumgr cli. Is there a tutorial or something how to use the mcumgr cli?

When ever I am using Auterm it is giving me a timeout error