nrfutil device program 54l15 external spi flash problem

RE: nrfutil device program 54l15 external spi flash problem

William.wei — Thu, 07 Aug 2025 02:45:57 GMT

Yes Hung Bui,

Great, it works, but our doc(https://docs.nordicsemi.com/bundle/nrfutil/page/nrfutil-device/guides/programming_external_memory.html) doesn't make it clear. there is no comment or note as you said:

[quote userid="2121" url="~/f/nordic-q-a/123059/nrfutil-device-program-54l15-external-spi-flash-problem/544282"]

We found that the reason you see the internal flash get erased is that the default behavior for the command is to do an ERASEALL.

So you need to add: --options chip_erase_mode=ERASE_NONE in to the command.

[/quote]

by the way, this doc doesn't clarify if it works on 91xx.

Thanks!

William.

RE: nrfutil device program 54l15 external spi flash problem

Hung Bui — Fri, 01 Aug 2025 08:27:51 GMT

Hi Lieping,

We found that the reason you see the internal flash get erased is that the default behavior for the command is to do an ERASEALL.

So you need to add: --options chip_erase_mode=ERASE_NONE in to the command.

This is independent from the ext_mem_erase_mode=ERASE_RANGES_TOUCHED_BY_FIRMWARE that you used.

RE: nrfutil device program 54l15 external spi flash problem

Simonr — Thu, 24 Jul 2025 09:04:06 GMT

No, sorry. I was sure I saw the program command before --x-ext-mem-config-file, but I was wrong. Unfortunately I don't have any good ideas to what this is caused by. I will ask someone with more expertise to look into it next week. I'm afraid I won't be able to this week due to the staff shortage during summer.

Best regards,

Simon

RE: nrfutil device program 54l15 external spi flash problem

William.wei — Wed, 23 Jul 2025 06:07:56 GMT

[quote userid="85273" url="~/f/nordic-q-a/123059/nrfutil-device-program-54l15-external-spi-flash-problem"]2: C:\Users\William>nrfutil device --x-ext-mem-config-file C:\Users\William\Desktop\54L15.json program --firmware C:\Users\William\zephyr1.hex --options ext_mem_erase_mode=ERASE_RANGES_TOUCHED_BY_FIRMWARE,verify=VERIFY_READ[/quote]

yes simon,

you see i have already put the program command after the --x-ext-mem-config-file command.

or, i misunderstand you meaning?

Regards,

William.

RE: nrfutil device program 54l15 external spi flash problem

Simonr — Tue, 22 Jul 2025 07:36:54 GMT

Hi William

I think you need to put the program command should come after the --x-ext-mem-config-file command as in the explanation of how to program only the .hex file to the external flash. With the one you've done here I think you also write it to the SoC as well as the external device.

Best regards,

Simon