bootloader.axf to bootloader.bin

[Paul]

I want to update the bootloader inside nRF51422 using iPhone. Updating applications hasn't been any problem.

Following the same procedure but I cannot convert bootloader.axf to bootloader.bin

This is the command I am using c:\keil_v5\arm\armcc\bin\fromelf.exe --bin --output bootloader.bin bootloader.axf

This is the file bootloader.axf

The result is only a folder bootloader.bin, which I guess is for error message, but cannot read.

[Hung Bui]

Hi Paul,

There are some steps needed to convert bootloader binary image. It's described at the documentation mentioned at section G in this FAQ.

Note that the need for generating .bin file is obsolete. You can use the nrfutil.exe tool to do the task for you. You can generate the .zip package with init data by using the .hex file.