# Environment & Preferences ## System - **OS:** Windows 11, x86-64 - **Shell:** Git Bash (`C:\Program Files\Git\bin`) — always use Unix shell syntax (forward ...
Use the 6-pin ICSP header on Arduino Nano (best reliability): ICSP Header Location on Nano: ┌─────────────────────────────┐ │ ┌──┬──┐ │ │ │ │ │ ← = Pin 1 ...