How to use the OTA in SDK?

[Alice]

Hi all,

I test the DFU as follow:

1. erase chip, program "s110_nrf51822_5.2.1_softdevice.hex"
2. program "bootloader" by using nrfjprog.exe
3. "DfuTarg" can be found in Master Control Panel. 4.On the Master Control Panel,Right-click the "DfuTarg" and then I can see over the air DFU.Then I select select a "ble_app_proximity.hex" 5.Wait for a while and 100% done.

This can be done successfully. I have another problem.It seems that the bootloader will be erase when firmware update completed.So what should I do if I want to update the firmware again?

BR Alice

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[Alice]

I have solved the problem now.but I have another problem.It seems that the bootloader will be erase when firmware update completed.So what should I do if I want to update the firmware again?

[FormerMember]

Hello,

In order to make the chip go into bootloader mode after flashing an application using DFU, you have to press button 7 while resetting the chip.

Regards, Kristin

[Alice]

Sometimes it cann't go into bootloader mode when I press button 7 while resetting the chip.

[FormerMember]

How often is sometimes? The times when the chip doesn't enter bootloader mode, do they have something in common? Do they differ from the times when the chip can enter bootloader mode?

[VIJAY RAMNANI]

i am having question here .. how to program bootloader using nrfjprog.exe file??? please reply as soon as possible