cypress-fx3

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schlarpc / elgato-cam-link-4k-firmware-re

Firmware reverse engineering of the Elgato Cam Link 4K (USB 0fd9:0066): vendor HID protocol, SPI flash layout, FX3 and ECP5 firmware formats, update path, security analysis, and an independent flashing tool.

fpga usb hid firmware reverse-engineering elgato ecp5 capture-card cam-link cypress-fx3

Updated Aug 16, 2026
Python

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