nRF Utility tool for SDK 11

[Nhuan]

Hello everyone,

Can I use the latest nrfutil 6.1.0 tool to generate the DFU zip file for the dual_bank_bootloader in SDK11?

If yes, do I need to keep the --hw-version and --bootloader-version options the same with my old firmware, which needs to be updated?

Thank you.

[Vidar Berg]

Hello,

You will need to nrfutil v.0.5.x to create DFU packages for the legacy bootloader. From the nrfutil documentation:

The DFU package format transitioned from legacy to modern in nRF5 SDK v12.0.0. Depending on the SDK version that you are using, select a compatible release of this tool:

• Version 0.5.x generates legacy firmware packages compatible with nRF5 SDK v11.0.0 and earlier.
• Version 1.5.0 and later generate modern firmware packages compatible with nRF5 SDK v12.0.0 and later.
• Version 2.2.0 or later is required to generate a bootloader settings page that is compatible with nRF52840.
• Version 4.0.0 and later generate modern firmware packages compatible with nRF5 SDK v15.1.0 and later.
• Version 5.0.0 and later generate modern firmware packages compatible with nRF5 SDK v15.3.0 and later.

Note that this version is not available through PyPi, but must be installed with setuptools as explained in the readme here: https://github.com/NordicSemiconductor/pc-nrfutil/tree/0_5_3