BLE Connectivity firmware

I’m seeking for help I’m trying to compile BLE Connectivity from nordics stack,
I’ve banging my head against a wall for days now.
Could you point me out how you are doing it? Are you changing something from original source?
Firmware provided in mdk repo works great, however I need to make one change to enable long write to gatt.
I followed precisely instructions from pc-ble-driver to compile the hex, still not able to do it.
I appreciate any help :slight_smile:

P.S.: nRF52840-MDK great product, great work!

You can follow this guide to compile the connectivity firmware and remember to change the board config for nRF52840-MDK.