The new nrf51822 can't run old program

[chenyu]

Hi: We develop our program based on (nrf51822 QFAAG0 1403AL), I found a serious problem that our new IC is (nrf51822 QFAAG2 1415AF), and the old program can't run on it any more. especilly program connect to DFU! Can you tell me the reason and the way to solve the problem! Thank you! ps: S110 6.0.0 + sdk5.2 + keil4.73

[Susheel Nuguru]

Can you give us little more details of what you tried and what is not working? Can you debug the code to see where it fails?

[chenyu]

There is no error,but after download program(bootloader with dfu)into nrf51822; The ble can't broadcast.

[Susheel Nuguru]

it does not happen that the ble just doesn't broadcase without any errors in application/softdevice (assuming the hardware is ok). How did you debug this and conclude that there are no errors?