I use dfu_dual_bank_ble_s110 bootloader from SDK10. I want the bootloader to check whether if incoming firmware is compatible with the device it is uploaded to (i.e. device's device type corresponds to new firmware device type defined in init packet and device's revision is compatible with new firmware device revision defined in init packet). Is this check already implemented in dfu_dual_bank_ble_s110 bootloader or do I have to implement it myself. In the later case - where?