nrf toolbox application sends wrong softdevice image size in start packet.

[shubham]

While ota dfu via nrf toolbox android app, it sends wrong (0x15918) image size in start packet, and also bootloader starts writing softdevice image at address DFU_BANK_0_REGION_START(0x18000) instead of DFU_BANK_1_REGION_START(0x2A000). But it works fine with Application and bootloader dfu.

nrf chipset is : nRF51822 QFAA

Settings for nrf toolbox application are: packet recipt notification proc... : true Number of packets : 100 MBR size : 4096 Keep bond information : false External MCU DFU : fasle

[Vidar Berg]

Hi, when preparing a SD image, nrf util will automaticcally remove the UICR section and any byte padding at the end. 0x15918 bytes should be correct if you are using s110 v.8.0.0.

A SD image will always be loaded to BANK_0 where the application resides due to its size, see softdevice update in SDK documentation

Are you getting any error messages while uploading SD, and have you tried to upload the SD distrubution .zip found in \nRF51_SDK_9.0.0\examples\dfu\ble_dfu_send_hex\test_images_update?