Let’s be brutally honest. If your search for "macbook t2 bypass free upd" is because you bought a second-hand T2 MacBook that’s Activation Locked to a stranger’s Apple ID, .

The firmware password disappears because the T2's secure vault is reformatted. This is a 100% free, Apple-approved method. It is simply a factory restore.

Third-party tools (like iBypasser Lite or T2Unlocker – none are truly free) modify the Secure Boot variable. A macOS delta update will overwrite that variable, causing a brick.

If you plan to keep using a bypassed T2 MacBook: