DFU disconnecting while flashing the .zip file

[Faizan]

I am using SDK 15 and i have successfully flash soft device , boot-loader and application code using nrfgo studio. Connecting using nrf connect application. Click on the DFU button and select the .zip file and after that DFU is disconnected.

How can i flash the .zip file ? I have done all the steps correctly. Still DFU is disconnecting. 

[Vidar Berg]

Hi, 

Have you tried to program the pre-compiled .hex (examples\dfu\secure_bootloader\pca10040_ble_debug\hex) and uploaded the  "\examples\dfu\secure_dfu_test_images\ble\nrf52832\ble_app_buttonless_dfu_without_bonds_s132.zip" package? Also, when DFU disconnects, did you get any error messages in the console window in nRF connect? 

[Faizan]

Yes, i try this step also. Still dfu disconnecting. And there is nothing display in the console.

[Vidar Berg]

Please try the following to make sure this is not a problem with the mobile app/board:

1. Program secure_bootloader_ble_s132_pca10040_debug.hex with nrfjprog : nrfjprog --program secure_bootloader_ble_s132_pca10040_debug.hex --chiperase -r

2. Upload ble_app_buttonless_dfu_without_bonds_s132.zip through the app.