Default boot-loader for dongle

[Hiihtaja]

Hello !

1. I have found in internet bootloader for dongle graviton_bootloader_mbr_v1.0.1-\[nRF5_SDK_15.0.1-1.alpha_f76d012\].hex and able to flash and use it.

   But where I can found latest version of precompiled bootloaer what is based on latest SDK ?

  Or it should be compiled by myself from some known sources  ? Please point me to right page/code.

2. By using the bootloader and nrfutil, I'm able to create dfu.zip and update application only.

BUT

how  issue SW reset by using nrfutil without actual update ?

Sometimes I put dongle like HW to DFU by Reset mode and need to reboot it to normal boot without power on/off operation ?

How to erase application without actual update of it ? Just bootloader should remain.

Regards,

Eugene

[Simonr]

Hi

As far as I know there is no way to verify that the Dongle is in bootloader mode except trying to initiate a DFU with the Dongle. 

The bootloader firmware that is "graviton_bootloader_mbr_v1.0.1-\[nRF5_SDK_15.0.1-1.alpha_f76d012\].hex" does not have a timeout I'm afraid, but you can set a timeout in the open bootloader example I mentioned to be whatever you desire.

Best regards,

Simon