Firmware v1.14 makes --reset (DTR/RTS toggle) reliably clear the ungraceful-disconnect lockout, unlike v1.12. A plain reconnect without --reset still fails on both versions, so recovery is specifically tied to the reset line, not just a fresh connection. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GpePKZiEZWbGo9HrfuML6U