DFU OTA giving error upload failed: REMOTE DFU DATA SIZE EXCEEDS LIMIT. while flashing application

[NIDHIN K]

Hi, i am trying to update OTA application zip file size 112kb but it become failed and showing upload failed: REMOTE DFU DATA SIZE EXCEEDS LIMIT , But if i am flash small size application zip (58kb) it can able to flash. I am using nrf51822(256kb flash) , gnu arm eclipse s/w pls anybody helpme??

[bjorn-spockeli]

Which SDK and SoftDevice version are you using? How did you create the firmware image ( i.e. zip file) you used to perform DFU? Can you upload the the zip file?

[NIDHIN K]

i am using GNU arm eclipse software using SDK v.10 and Softdevice S110 s110_nrf51_8.0.0_softdevice.hex

[NIDHIN K]

i think issue is , now i am using dual bank DFU, in dual bank dfu we cant able to flash large files. so instead of dual bank i want to use single bank dfu. pls tell me how to add single bank dfu.

in my project have both dfu_dual_bank.c and dfu_single_bank.c file

[bjorn-spockeli]

The S110 v8.0.0 needs 0x18000 bytes of Flash and the bootloader should start at 0x3C000, which means that you have 0x3C000-0x18000 = 0x24000 bytes = 144kB left for the application. The application space will be divided into two banks of 72kB, i.e. the maximum application size is 72kB. Therefore, an application of only 58kB should not be an issue. Can you upload the hex file and the zip file of the application`?

[NIDHIN K]

Thanks for ur response. That i know i can flash ota file size maximum 74kb. But my file size is 112kb how its possible to flash this large file through OTA.