SDK12 DFU service not found

[jpolvi]

I am developing software for a custom hardware based on NRF52. Previously I was tasked on updating the old NRF51 based software (used on older version of the device) for NRF52 using SDK11. Once that was done my next task was updating the software for SDK12. The software is otherwise working fine but I am having problems with DFU. I tried creating a zip of the application and flashed the combined softdevice/bootloader from SDK12 examples folder (dfu/ble_dfu_send_hex) to the device. The device shows as DfuTest on the mobile DFU app but when I try to upload the zip all I get is "DFU service not found". I also tried compiling the secure DFU bootloader example and using that instead but the result is the same.

Do I need to also have DFU support in the application for that to work ? Currently the application has some kind of DFU functionality from the earlier SDK 11 implementation but I'm guessing that wont work. Any examples to study so that I can implement the functionality ?

[jpolvi]

Memory settings in that file are as follows: FLASH (rx) : ORIGIN = 0x78000, LENGTH = 0x6000 RAM (rwx) : ORIGIN = 0x20002C00, LENGTH = 0x5380 NOINIT (rwx) : ORIGIN = 0x20007F80, LENGTH = 0x80 BOOTLOADER_SETTINGS (rw) : ORIGIN = 0x0007F000, LENGTH = 0x1000 UICR_BOOTLOADER (r) : ORIGIN = 0x10001014, LENGTH = 0x04 MBR_PARAMS_PAGE (rw) : ORIGIN = 0x0007E000, LENGTH = 0x1000 UICR_MBR_PARAM_PAGE(r) : ORIGIN = 0x10001018, LENGTH = 0x04

Though I am using uVision to build it. I also use uVision to build the demo, but for the application the code size limit of the lite version makes it impossible to use uVision. Perhaps that has some effect ?