nrf51822 OTA Fail

[Mr.Li]

Hi Nordic Tech support team， I have some problems with nrf51822 OTA. My Bootloader is single bank Bootloader。When I update nrf51822 firmware by OTA with android apk, I found ota failure rate is higher. Then, someone give me suggestion as follow code

uint32_t dfu_ble_peer_data_get(dfu_ble_peer_data_t * p_peer_data)
{
    uint16_t crc;

    if (p_peer_data == NULL)
    {
        return NRF_ERROR_NULL;
    }

    crc = crc16_compute((uint8_t *)&m_peer_data, sizeof(m_peer_data), NULL);
    if (crc != m_peer_data_crc)
    {
        return NRF_ERROR_INVALID_DATA;
    }

    *p_peer_data = m_peer_data;

    // corrupt CRC to invalidate shared information.
    m_peer_data_crc++;

    return NRF_SUCCESS;
}

when I delete code “m_peer_data_crc++;”， I found ota failure rate is low. But if that, When OTA failed, nrf51822 can not advertise . Reset nrf51822, nrf51822 advertises normally again.
What causes this problem? Thanks

[bjorn-spockeli]

Can you explain why you are modifying/removing that specific line? Deleting that line will should not affect how often the DFU fails.