can i change SD S112 of version 5 to 7 through DFU

[Surya]

I have developed an app with DFU using SD s112(version 5)  for custom NRF52810 board.

Q1: I want to update SD s112 to version 7.  is it possible ?

Q2: how ?

[Hung Bui]

Hi Surya,
If you plan to do BLE DFU (over the air) it's not possible to update the S112 on nRF52810 because the size of the S112 is 100kB. It's not possible to receive the new softdevice when retain the old softdevice on 196kB flash of the S112. 

If you plan to do UART DFU then it's possible in the sense that we erase the old softdevice and copy the new softdevice over. 

[Surya]

Thanks for the reply. I want to do DFU OTA.