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NordicSemiconductor / Android-nRF-Toolbox

The nRF Toolbox is a container app that stores your Nordic Semiconductor apps for Bluetooth Low Energy in one location.
https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Toolbox
BSD 3-Clause "New" or "Revised" License
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"DFU device not found" error #20

Closed CptJackieSparrow closed 8 years ago

CptJackieSparrow commented 8 years ago

I'm trying to upgrade firmware of iwown i5 Plus bracelet (not working without connecting it to power, so i'm trying to restore it), but everytime i try to upload firmware to Braceli-0164 (my device name), i'm getting that "DFU device not found" error.

philips77 commented 8 years ago

Hi, We are not the manufacturer of i5 Plus device nor it's firmware. Although, I saw they use our apps tu upgrade/downgrade the firmware.

I got many questions like yours regarding this topic and the only thing I can do is to point you to some videos showing how others do it: https://www.youtube.com/watch?v=tsWey15LNe8 You may use nRF Connect app instead of nRF Toolbox as it ensures the device cache is cleared before doing DFU so no old services are used. Also, I think it requires some command/other app to switch it to DFU bootloader mode.