nRF51822 doesn't work with softdevice 8.0.0

[ben]

when i download the 7.0.0 softdevice and the demo project "Nordic\nrf51822\Board\pca10001\s110\experimental\ble_app_uart" to my nRF51822 board,it works well,but use the 8.0.0 softdevice and the demo project "nRF51_SDK_8.0.0_5fc2c3a\examples\ble_peripheral\ble_app_uart",it doesn't work,the phone app can't find the ble device,could you tell me what's the problem? tks.

[Susheel Nuguru]

have you changed IRAM and IROM settings? check this post

Did you also check the compatibility matrix to see if your hardware revision supports SD 8.0.0?

[ben]

thanks for you reply,I check the IRAM and IROM,it's correct,even when i use 7.0.0 softdevice with the 8.0.0 protject,change the IROM to 0x16000,my board can work,the app can find the ble device,but use 8.0.0 softdevice and the 8.0.0 project(IROM set to 0x18000),my boad can't work.I only want to use ble_app_uart with pairing pin,if I could use the 7.0.0 softdevice? I was told that it's
better to update to 8.0.0.thanks again!