nRFtoolbox Firmware update says "DFU Upload complete" but has failed

[dgerman]

IOS, nRF Toolbox 4.4.4, DFU Library version 4.1.1 

Attempting to flash to ruuvi with nRF52832 reports 

:INFO:Hash failure and

:INFO:Return false in CRC 

to J-Link RTT but gives no indication of failure to iPhone.

It must report error to iPhone.

:INFO:Storing 256 B at: 0x00037f00
:INFO:Before OP crc
:INFO:Received execute object
:INFO:Before OP execute
:INFO:Received create object
:INFO:Before OP create
:INFO:Storing 256 B at: 0x00038000
:INFO:Storing 256 B at: 0x00038100
:INFO:Storing 88 B at: 0x00038200
:INFO:Before OP crc
:INFO:Received execute object
:INFO:Before OP execute
:INFO:Hash failure
:INFO:Current bank is bank 1
:INFO:Waiting for other flash operation to finish.
:INFO:Erasing: 0x0007f000, num: 1
:INFO:Writing settings...
:INFO:Resetting device. 
:INFO:In nrf_dfu_transports_close
:INFO:Inside main
:INFO:In nrf_bootloader_init
:INFO:Return false in CRC
:INFO:In nrf_dfu_transports_init
SDH:WARNING:RAM size should be adjusted to 0xd868 

[Aleksander Nowakowski]

Hi Dennis German,

Could you post logs from the nRF Toolbox? You must run it from the XCode in order to get logs. You may also use nRF Connect on iOS and the logs will be available from the DFU screen, as far as I remember.

[dgerman]

I will try however running from Xcode is non trivial for me and
download failure getting CRC error does not usually happen