The firmware update is too slow

[Arjun_arj]

Before updating firmware i have updated connection parameter with low connection interval. But it taking too much time. If I gave the same parameters at the first time while initialization it keeps the speed for the firmware update.   Is there anything i have to do after calling ble_conn_params_change_conn_params().

[Vidar Berg]

Hi,

Not sure I understand the question. Is it taking to long to re-negotiate the connection parameters after calling ble_conn_params_change_conn_params()? What's the approx. time it takes to update it in your case?

[Arjun_arj]

it taking about 17 minutes to transfer 63kb. When I gave the same settings as a default value and run again taking only 6 minutes. But I need to update connection parameter at the time of writing only.

[Vidar Berg]

Can you include some more details about your setup? Like SDK version, DFU controller host, etc. 6 minutes is really slow for a 64k image.

[Arjun_arj]

sdk15 with softdevice 6.0.0 for nrf52832

[Vidar Berg]

What do you use to upload the image? The transfer shouldn't take much more than 10 seconds unless you're using an old smartphone or nrfutil. It should never take several minutes to complete a DFU. Have you made any code changes to the bootloader example?