CODE AND STORAGE OVERLAP while building firmware for NRF52

I will put up latest flasher code in the evening

changes here

But maybe I can call REPORT_RECEIVED_IMAGE_SIZE already after sending first packet.

That idea worked fine and is much faster than recovering later after sending 15 long packets and not receiving notification :-)

I guess next time I can try to put secure DFU there too and try with SDK12 based espruino. As for bootloader changes hopefully it will be just changing this to 244 and possibly also NRF_BLE_MAX_MTU_SIZE definition few lines below to 247.