HSE FW Erase

[Voknal]

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?

[lukaszadrapa · Accepted solution]

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

[ovidiubriscan]

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#...