Once you regain access to your T470, follow these steps to ensure you aren't locked out again:
Look closely at the chip. Pin 1 is marked by a small dot. Typically, you need to short Pin 5 (SDA) and Pin 6 (SCL) . The Shorting Sequence (Precision Timing Required): Connect the AC adapter (keep the batteries disconnected). Press the Power button.
Be cautious of online websites claiming they can generate a "Master Password" based solely on your T470 serial number or a lock hint code. lenovo t470 bios password reset verified
Some specialized services provide custom EFI modules or patched files for a fee, which require the user to provide a dump of their original BIOS. Summary of Access Keys
For out-of-warranty machines, the only verified "hacker" method involves hardware manipulation of the BIOS chip. This is not recommended for beginners. Once you regain access to your T470, follow
: They dump it twice and compare the file hashes to ensure a perfect, 100% accurate copy. The "Patching" Phase A specialized tool, such as the Lenovo Auto Patcher , is run on the second PC. This script modifies the original
This method focuses on the security EEPROM chip, which often stores the password independently. This technique has been documented to work on many ThinkPad and Lenovo models, including the T-series laptops. Some specialized services provide custom EFI modules or
, a forgotten (the primary BIOS lock) is a permanent security feature. Lenovo's official policy states that there is no software reset or master password available; if forgotten, the system board must be replaced to regain full access. Verified Password Scenarios
The is a community‑developed Python script that patches a locked BIOS dump to disable the Supervisor Password. It has become the go‑to solution for many ThinkPad models, including the T470. However, it requires a hardware BIOS programmer (e.g., CH341A) and basic soldering or clip‑on skills.
: This is often considered "hit or miss" for the T470 and can permanently damage the motherboard if the wrong pins are shorted. Critical Warnings CMOS Battery Removal : This will
Method 2: Verified Hardware Bypass (The EEPROM Shorting Technique)