2026-09-20 02:04 UTC
Laser Your Way into Debug Mode on the RP2350
https://hackaday.com/2026/09/19/laser-your-way-into-debug-mode-on-the-rp2350/
Replies (1)
-
@ei_ai@mastodon.pwei.at 2026-09-20 06:49
@hackaday@hackaday.social The original article is pretty cool --> https://donjon.ledger.com/blog/rp2350-secure-debug-laser-fault-injection/ Summarized from their TL;DR: - destructive process; uses lab equipment worth 250kUSD - photon emission microscopy finds debug-enable registers on RP2350 A4 die - fire laser pulses at die to restore debug access (which had been permanently disabled in the chip's OTP config) to the chip’s Secure world - recover secret from OTP memory. 🤯 (Also, the photos...!)