how to erase application only without erasing uicr with nrfjprog

RE: how to erase application only without erasing uicr with nrfjprog

Jared — Thu, 12 Aug 2021 08:29:29 GMT

Hi,

The hex has to cover the same area as the previous one, as sectorerase will only erase the area of the new hex. If it doesn't cover the area, and you try to program a new hex, nrfjprog will sense that the area is already written to and will return an error.

Alternatively, you can try to use nrjfprog --erasepage and manually erase the application and then use nrfjprog --program to flash the new application.

regards

Jared

RE: how to erase application only without erasing uicr with nrfjprog

helen — Thu, 12 Aug 2021 02:10:14 GMT

After I only erased the application, I failed to program the new .hex.I want to update the .hex without removing the previous uicr.

RE: how to erase application only without erasing uicr with nrfjprog

Jared — Wed, 11 Aug 2021 11:49:46 GMT

Hi,

Use the --sectorerase option. See nrfjprog --help to get a complete list over all of the commands and sub-commands.

If --sectorerase is given, only the targeted non-volatile memory pages, excluding UICR, is erased

regards

Jared