NRF52811_xxAA_REV2 verify failed with firmware compiled against nRF5 SDK v17.1.0

RE: NRF52811_xxAA_REV2 verify failed with firmware compiled against nRF5 SDK v17.1.0

tesc — Tue, 11 Feb 2025 09:48:22 GMT

Hi,

Thank you for sharing your solution to the issue.

I did find it a bit strange that an --eraseall is needed, since the --recover should already have erased all user available non-volatile memory. Nevertheless, it looks like use of watchdog timer could explain behavior like the one you see, yes, as described in nrfjprog verify fails with chiperase.

Regards,
Terje

RE: NRF52811_xxAA_REV2 verify failed with firmware compiled against nRF5 SDK v17.1.0

Mateoosh — Tue, 11 Feb 2025 08:15:15 GMT

OK, I'll reply to myself, since I made it work:

Based on nrfjprog verify fails with chiperase i introduced an --eraseall step , so instead of:

nrfjprog -f nrf52 --recover

nrfjprog -f nrf52 --program fw.hex --verify

(this workflow works with REV1 perfectly)

I ran:

nrfjprog -f nrf52 --recover

nrfjprog -f nrf52 --eraseall

nrfjprog -f nrf52 --program fw.hex --verify

and REV2 verify was OK, device runs :-)