single bank bootloader ble

[larry]

hi, i have a project which need dfu by OTA,but nrf51822 flash is not enough.The project detail information in the following: chip:nrf51822QFACA10 SDK6.0 SOFTDEVICE:7.3.0 my project application has used 105k flash,so i can not updata firmware by dfu_dual_bank_ble,so i want to updata firmware by dfu_dual_bank_ble. question one: i think i can updata firmware by dfu_dual_bank_ble if i never program application ,i think the flash is enough ,but i can not updata firmware,the MCP show updata complete,but the device is duf mode alway,so why question two:if i want to updata firmware by dfu_single_bank_ble,SDK9.0 also have not dfu_single_bank_ble , who can hlep me to solve this problem,think you.

[helen]

Hi,I wonder from which version of SDK we can use the single bank ble through the way you mentioned above?Or the other way to achieve this?Thank you!