How to Unlock a Mac with a Solderless EFI Chip Card (Full Guide)
Fix EFI Firmware Lock, iCloud Issues, and MDM Profiles on Your Mac
If your Mac is locked with an EFI firmware password, stuck on an iCloud lock screen, or restricted with an MDM profile, you’re not alone. Many users face these issues after forgetting a password, buying a used Mac, or experiencing corrupted firmware after a system update.
Fortunately, there is a reliable and hardware-based fix — the Solderless EFI Chip Card.
In this guide, we’ll explain what the EFI card does, how it works, and why it has become one of the most popular solutions for unlocking Macs from 2011 to 2017.
What Is a Solderless EFI Chip Card?
A Solderless EFI Chip Card is a small hardware board designed to replace the firmware security chip inside older Mac models. Instead of soldering or removing the original BIOS chip, you simply install this card into the Mac’s logic board.
Because it’s solderless, beginners and technicians can use it safely. It instantly unlocks the machine and removes several types of firmware-related lock
What Problems Can the EFI Chip Help With?
The EFI chip card helps with several common issues that stop a Mac from booting or installing macOS properly. For example:
✔ Forgotten EFI Firmware Password
If your Mac shows a lock screen and asks for a firmware password that you no longer remember, the EFI card provides a way to get back into the system so you can reinstall macOS and continue using your device.
✔ iCloud PIN Screen After Firmware Errors
Sometimes, after firmware corruption or a failed update, Macs may display a 4-digit, 6-digit, or alphanumeric PIN screen. The EFI card helps you move past this screen so you can continue with macOS installation and recovery.
✔ MDM / DEP Profile Restrictions
If your Mac previously belonged to a school or business, it may still be linked to a Device Enrollment Profile (DEP) or Mobile Device Management (MDM). The EFI card allows you to install a clean version of macOS without those restrictions, giving the device a fresh start.
Which Mac Models Are Supported?
The solderless EFI card is compatible with Apple Mac devices from 2011 to 2017, including:
- MacBook
- MacBook Pro
- MacBook Air
- Mac mini
- Mac Pro
You can find your model’s EMC number on the bottom case or by searching your serial number online.
How the Installation Works
The installation process is simple and requires only basic tools:
- Power off your Mac and remove the bottom cover.
- Locate the firmware chip area.
- Insert the solderless EFI card into the connector.
- Reassemble the Mac and power it on.
- Erase the drive and reinstall macOS for a fresh start.
After this, your Mac will be fully unlocked and ready to use.
Why Choose a Solderless Solution?
There are several reasons why users prefer this method over soldering or replacing chips manually:
🔹 No soldering required
Safe for beginners and avoids damaging the board.
🔹 Fast installation
Most installations take under 10 minutes.
🔹 A permanent fix
Once installed and reprogrammed, the firmware stays clean.
🔹 Compatible with multiple lock types
EFI, iCloud, MDM, DEP, and corrupted firmware issues.
🔹 Restores older Macs
Great for refurbishers, shops, or people who repair and resell Macs.
Where to Get the Solderless EFI Chip Card
Our shop offers tested, high-quality solderless EFI chip cards with fast shipping.
Each card can be programmed with your chosen serial number and includes support for:
- EFI unlock
- iCloud lock removal
- DEP / MDM profile removal
- Firmware repair
Where You Can Purchase the Solderless EFI Chip Card
👉 Official Store
👉 eBay Store
👉 Etsy Shop
Each platform offers secure checkout, quick delivery, and the same reliable customer service.