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Estimation to migrate application from nRF SDK 11 to SDK 14

Hi,

I have my application running on NRF52 using NRF SDK11. I want to upgrade the application to latest SDK14 and also softdevice to v5.0

The application uses following modules:


- UART to communicate with other controller

- BLE (Central and Peripheral both)

- Flash storage

Can someone please guide me what should be a rough estimate to migrate the application to a newer SDK with testing all the features?