T.sk105a.03 Firmware | Update

Common flashing methods

Date: October 26, 2023 Subject: Investigative Report on the t.sk105a.03 Firmware Update Classification: Internal / Technical Analysis t.sk105a.03 firmware update

Upon flashing the firmware, the device performs a double-reboot. The first reboot writes the new AES keys to the secure element. The second reboot validates the checksum. If the technician interrupts power during the first reboot, the device enters a "bricked" state requiring a JTAG hardware flash to recover. Common flashing methods Date: October 26, 2023 Subject:

During sandbox testing, the deployment of revealed several interesting anomalies that technicians must note: Common flashing methods Date: October 26

: Do NOT cut off the power during this process, as it can brick the board.