CRC Error using DFU of nRF Toolbox

Question

I want to update over BLE with using DFU tool. But do not start updating process. 
DFU tool indicates "Enabling DFU Bootloader". 
Bootloader stops at memcpy() of dfu_ble_peer_data_set(). 
Where/What should I confirm ? 
 Application Hex File is merged app_valid_setting_apply.hex. 
DFU Update Type is Dual Bank type. 
Application size is about 20kB. 
 S110 v8.0.0 
SDK v8.1.0

mino · Accepted Answer

Thank you for your reply. 
 I'm using the bootloader example from the SDK. 
(
RF51_SDK_8.1.0_b6ed55f\examples\dfu\bootloader\pca10028\dual_bank_ble_s110\arm5_no_packs) 
I checked update procedure again. Then I understood this procedure. 
 
 Make bin file of application 
 Calculate CRC of bin file 
 Make dat file 
 Make json file 
 Compress to zip file 
 Send zip file to nRF Toolbox 
 Update with zip file 
 
 Updated the application.
Thanks !!

CRC Error using DFU of nRF Toolbox

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