topic Re: HSE FW Erase in S32K

HSE FW Erase

Voknal — Tue, 05 Mar 2024 13:15:17 GMT

I am using microcontroller MWCT2016S and currently working on HSE firmware flashing automation. I would be much obliged if someone could provide me an information if there is potentially any way of erasing HSE once It's been flashed since the memory its been written to is security related and protected.

Is there any way to do this over JTAG or any similar solution?

Re: HSE FW Erase

lukaszadrapa — Wed, 06 Mar 2024 06:32:25 GMT

Hi @Voknal
new service HSE_SRV_ID_ERASE_FW was added to latest versions of HSE FW.
Latest firmware 0.2.40.0 for this device supports this feature, older 0.2.6.0 does not.
I described here how to simply trigger the service:
https://community.nxp.com/t5/S32K/HSE-firmware-installation/m-p/1816382/highlight/true#M32157
Regards,
Lukas

Re: HSE FW Erase

ovidiubriscan — Mon, 16 Sep 2024 08:29:15 GMT

Hi, this does not work in a persistent way. I do launch the sevice from a cmm script from Trac32, i get the response ok (no service is working after this) but when i do a POR the HSE FW is back online. See https://community.nxp.com/t5/Lear-Stellantis-Smart-BCM/HSE-erase-FW-command-not-working/m-p/1953238#M280