only update bootloader

[james]

Hi,I'am try to update the bootloader. But it stop at 1%. I don't what I miss.

james_boot.hex

james_bootloader.zip

Log 2016-09-06 11_36_54.txt

Dfu_bootloader_via_hex.txt

Dfu_application_via_zip.txt

james_bootloader_test.hex

[Hung Bui]

Yes, you can use nrfutil.exe (or nrf.exe for earlier MasterControlPanel version) to generate .zip file from the bootloader.hex. It's pretty complex to make the .dat and it's not recommended. So I think it's better to let the nrfutil.exe do the task. You can use a command like this:

nrfutil.exe dfu genpkg bootloader.zip --bootloader yourbootloader.hex --application-version 0xffff --dev-revision 0xffff --dev-type 0xffff --sd-req 0xfffe