RESTORE BOOTLOADER OF XM122

[Myveck]

Hello I am using an acconeer XM122 / XB122 radar sensor with the integrated psco nrf52840, it turns out that I have mistakenly deleted the bootloader so I cannot flash with segger embedded studio, I want to reset the bootloader, j So I installed nfrcommand line and J link v6.86a but when I enter the nfrjprog commands I get an error message telling me that the command is not recognized internally. I'm not sure how to do this thanks for your help.

[Hung Bui]

Hi, 
Could you take a screenshot when you see the error ? 

Have you checked if the path to nrfjprog.exe is added to the PATH in system environment ? By default it's at C:\Program Files (x86)\Nordic Semiconductor\nrf-command-line-tools\bin\

You can check for the path to nrfjprog.exe by typing "where nrfjprog.exe" in Windows command line. 

[Myveck]

I've this error message, yes the path is correct... I don't know if it's the good path

[Myveck]

I've tried all the path of the bin folders, the same error message so i don't know 

[Hung Bui]

Why are you trying to do erasepage ? note that you need to type: --erasepage, not -- erasepage.
If you want to flash a firmware , please do --program [hex file name] instead. 

[Myveck]

Oh AMAZED !!! yes now it's working.. Thank you it was just a problem of tabulation