How to program efuses with blhost.exe (i.MX RT1020)

[dau]

I'm trying to program "EEPROM_RECOVERY_ENABLE" 0x6d0[24} which should be efuse #45. Reading works and shows a default value of 0x40. Writing gives me an "invalid command or arguments" response (see picture).

Also, I would like to understand the meaning of "[nolock/lock]" from help (also in the picture), which is not described in the user guide pdf.

Thanks!

[Krister]

The same problem here. The sintax from the manual doesn't work: invalid command or arguments 'efuse-program-once 5 4 0x12121212'

Please advice ! Thanx!

[jay_heng]

You can try this tool

GitHub - JayHeng/nxp-sec-boot-ui: A one-stop GUI tool to work with NXP MCU (Kinetis, i.MXRT, LPC) RO... 

[b36401]

Your usage of blhost.exe seems to be wrong. Actually efuse-program-once option of blhost.exe utility supposed only 2 paramaters:

efuse-program-once <addr> <data>

Here is a User's Guide:

https://www.nxp.com/docs/en/user-guide/MCUBLHOSTUG.pdf

Have a great day,
Victor

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[bulubuch]

Dear all,
I'm having the same issue as dau when trying to fuse a board with blhost efuse-program-once.
The usage is correct: address and data were given but blhost inserts 4 between address and data, probably for length.
Do you have any idea of how to solve this?

Thank you in advance