Hoi, > > On 25-03-10, Ahmad Fatoum wrote: > > Hello Marco, > > > > On 3/10/25 12:36, Marco Felsch wrote: > > > Current tests showed that fusing just the single field-return bit(0) on > > > i.MX8MP SoCs brick the device. > > > > So such a device is bricked permanently with no way to upload > > a bootloader again to fuse the remainder of the bits? > > Yes, as written here [3], the device isnow in "device asserts security > violation" state, what ever this means but maybe: "I refuse to power > up". The imx does consume power, but does "nothing", e.g. does not boot from emmc, say anything on the hardware serial or even enumerate the usb side. And pulling the boot-mode pins to serial-download mode does also nothing, even though the serial-dl is usually the one last and common fallback. > > [3] https://lore.kernel.org/all/a9ebece9-4ab6-4bca-bebe-985e0bf95278@xxxxxxxxxxx/ > > > Interesting thing to not document :/ > > Took us 2 devices to figure it out :/ We also don't know why NXP doesn't > care and don't update the (S)TRM since the v1 of [3] is 9months old. > > Regards, > Marco > gruß Johannes
