Cannot write Bootloader hex

[Sawada]

When trying to write the bootloader hex file to the device with nRFgo Studio, the following error message is displayed.

[nrf52840_xxaa_s140.hex programming failed: This hex file has data in SoftDevice region. Try programming using "Program SoftDevice", or erase all before programming.]

Even if erase all is performed, the same result is obtained.
I don't know why the SoftDevice area has been eroded.
I want to solve this problem.

[Vidar Berg]

Hi,

Please try to use nrfjprog or nRF connect desktop instead. nRFgo studio is replaced by the programmer app in nRF connect.

[Sawada]

May I try Flash from the development environment Keil?
In this case, the following is displayed when you flash download the build hex.

Error: Flash Download failed-"Cortex-M4"

[Vidar Berg]

Yes, it should work in Keil as well. Did you erase the chip first? 

[Sawada]

Yes, the same result was obtained when "Download" was selected after "Erase".

[Vidar Berg]

Can you upload the hex file so I can try the same here?