DFU failed on nrf52832 with my custom program that is based on coexist example and not failed with blinky ???

[turki]

DFU failed on nrf52832 with  my custom program that is based on coexist example and not failed with blinky  ??? 

is there any frame loss for a big hex file that want to dfu because i did a dfu for 3 boards far from each other 

all 3 boards were succefully upgraded with dfu ( blinky example hex = 6 octet ) .  however my example which is based on coexistance example or even client or provisionner example from light switch example ( over 250 octet hex file )  failed  to be sent with dfu to other boards ??? 

any proposed solution ?? 

each board is distant from other by 10 to 15 meters  

i'am using mesh sdk 2.1.1 

Thank you 

[Mttrinh]

You can set the bank address to 

(uint32_t *) ((NRF_UICR->NRFFW[1] + rom_base) / 2)

which is the middle of the application area, to ensure that there's the most amount of space possible for the new app, both as a bank, and as an application after the transfer finishes.