Internal stress tests conducted post-update revealed significant improvements:
Previous ZXDZ iterations struggled with low-voltage targets (sub 1.8V). The 2021 update introduces adaptive clock stretching, allowing the debugger to automatically throttle the SWD/JTAG clock when it detects a target not ready. Result: No more "Target not responding" errors when debugging sleep modes on low-power IoT devices. zxdz 2021 update
Installing the zxdz 2021 update requires meticulous preparation. Below is the official upgrade path recommended by the developers. zxdz 2021 update