Lenovo W541 (Maximized)

Table of contents

1. Lenovo W541 (Maximized)
   1. ⚠️ EOL: No microcode updates
   2. ✅ PROTECTED: TPM GPIO Reset
   3. Hardware Compatibility
   4. ⚡ Safety First
   5. Disassembly
   6. Flashing

⚠️ EOL: No microcode updates

This board’s CPU generation has reached End of Servicing Updates. See per-board EOL/ESU status for ESU dates and Heads threat model for security implications.

✅ PROTECTED: TPM GPIO Reset

Pre-Skylake — dedicated PLTRST# pin. See Per-Board Protection Status, TPM GPIO Reset Vulnerability.

Hardware Compatibility

Hardware: w541 — see the Hardware Compatibility List.

⚡ Safety First

Before starting, please read our SPI Programmer Best Practices guide for essential safety information and programmer recommendations.

Disassembly

No disassembly photos available yet on any site. References:

→ Libreboot W541 external flashing (dual chip, /CS trick: pull other chip CS# high via 47Ω to VCC) → ThinkPad W541 HMM (Hardware Maintenance Manual — physical disassembly)

Flashing

Refer to the T440p guide above for chip location and flashing commands. This guide will be expanded with W541-specific content.