DFU bootloader not working with sdk 9

[mukesh]

I am using nrf51822 qfaa IC (pca10004 board) with softdevice v8 and sdk9. Now I am trying to do the dfu example. I uploaded the softdevice with the help of nrf gostudio. But after uploading the bootloader it is not advertising but the leds BSP_LED_0 and BSP_LED_1 are on but the BSP_LED2 is not turning on. When I restarts, the BSP_LED2 is turning on once and suddenly goes off and other two LEDs are always on. I guess it is not entering in to the dfu mode. What could be the reason? But when i tried the dfu with softdevice v7.3 and sdk6 it worked properly. Please give me any suggestions for solving

[Einar Thorsrud]

The PCA10004 board has a early revision of the chip, which is not compatible with newer SDK and SoftDevice versions. The compatibility matrix shows compatibilities between chip revisions, SoftDevice and SDK versions.

[mukesh]

That means I should use sdkv 6 and softdevice v7xx. But ble_app_uart is working fine with sdk9.