| ✅ Do This | ❌ Don’t Do This | |------------|------------------| | Replace the maintenance box (T04D1) before resetting. | Reset without changing the box – ink will leak inside. | | Use a genuine or high-quality compatible maintenance box. | Use a resetter that claims to work “over Wi-Fi” (often fails mid-cycle). | | Track your reset count. After 3–4 resets, the internal foam degrades. | Ignore the error – the printer will remain locked permanently. |