Error in Writing External Flash STM32H750B-DK

[ZExpo.1]

ST-LINK SN : 002F00134D46501420383832

ST-LINK FW : V3J12M3

Board : STLINK-V3MINIE

Voltage : 3.43V

SWD freq : 8000 KHz

Connect mode: Under Reset

Reset mode : Hardware reset

Device ID : 0x450

Revision ID : Rev V

Device name : STM32H7xx

Flash size : 128 KBytes

Device type : MCU

Device CPU : Cortex-M7

BL Version : 0x90

Memory Programming ...

Opening and parsing file: ST-LINK_GDB_server_a05624.srec

File : ST-LINK_GDB_server_a05624.srec

Size : 169.02 KB

Address : 0x08000000

Erasing memory corresponding to segment 0:

Erasing memory corresponding to segment 1:

Erasing external memory sectors [0 1]

Erasing memory corresponding to segment 2:

Erasing external memory sector 16

Download in Progress:

File download complete

Time elapsed during download operation: 00:00:10.115

Verifying ...

Error: Data mismatch found at address 0x90000003 (byte = 0x20 instead of 0x24)

Error: Download verification failed

Encountered Error when opening C:\ST\STM32CubeIDE_1.13.2\STM32CubeIDE\plugins\com.st.stm32cube.ide.mcu.externaltools.cubeprogrammer.win32_2.1.0.202305091550\tools\bin\STM32_Programmer_CLI.exe

Error in STM32CubeProgrammer

Shutting down...

Exit.

[ZExpo.1]

I have tried with different values and it seems to be working fine , But I tried to mass erase the NOR FLash and Got this I again wrote in the last memory address 0x97FE0000 and the data seems to be written perfectly fine as shown

[jiangfan]

oh, it seems mass erase not fully functional. But as I remember, the more important is, to program code or data, the flow is erase block(s) + program block(s), random data files may be used to test if such operation is fully functional.

[ZExpo.1]

As shown in the pictures I can confirm that the data is not erased from the NOR Flash it can Only Be re written

[ZExpo.1]

Could You please share a External Flash loader which can only check single Nor Flash (We have 2 Separate Nor Flash on board)
RW187 (MT25QL512) x2

[jiangfan]

Sorry I don't have such kind of External Flash loader. All the External Flash loader files I have are from STM32CubeProgrammer installation.