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NRF51822: Updating Bootloader via DFU OTA

Hi All,

I am trying to update the existing Bootloader on my product with the new Bootloader via OTA DFU. I have searched the forum for similar posts and succeeded in creating the zip file with the Bootloader file. But while updating the Bootloader via NRFTOOLBOX app, the dfu prices starts and immediately the device gets disconnected with invalid object error.

I am using the following statement for creating the zip file

Nrfutil dfu genpkg fw_bootloader.zip --bootloader nrf51422_xxac_s130.hex --application-version 0xff --dev-revision 2 --dev-type 51 --sd-req 0x87

Then the zip file is created successfully but while updating the device gets disconnected with the invalid object error

Please help us to resolve the issue at the earliest

Best,

Krish

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