Huh, very interesting. As mentioned, I assume it's probably making use of the existing exploits against STM32 RDP1 but I'd really like to see some analysis of the device to see for sure.

▲

rustyhancock an hour ago | parent [-]

Yes and why cooling to freezing might help! Slowing the clock presumably?

	▲	technothrasher an hour ago \| parent [-]
		Speaking of cooling STM chips, I noticed a while ago, much to my annoyance, that the STM32C0 chips started to do really strange things below -20C even though they're rated to -40C. Luckily the pin compatible STM32G0 chips worked correctly down to -40C, so I could finish the project and ship the product.