The new and improved Programmer Shield is essentially a USB-JTAG converter that gives advanced users complete access to the Photon's memory space. It supports openOCD and the WICED SDK, and is built around the FT2232H high speed USB FIFO. https://elecena.pl/product/17500565/particle-programmer-shield-for-photon 2021-04-06 https://elecena.pl/product/17500565/particle-programmer-shield-for-photon 2024-01-24