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1. MAC PRO EFI FIRMWARE UPDATE USB HOW TO
2. MAC PRO EFI FIRMWARE UPDATE USB SERIAL
3. MAC PRO EFI FIRMWARE UPDATE USB FULL
4. MAC PRO EFI FIRMWARE UPDATE USB PASSWORD

A way to connect to the Raspberry Pi - I used SSH, but serial can work as well.

I am also not responsible for any bricked Macs this may result in, do this at your own risk with the possibility of a bricked Mac in mind. I'll describe the method that worked for me it may be somewhat different on your particular MacBook. I've bored you enough with the story, let's get to the exciting part. The post on the Rossmann Group forum did cite the latter source, but it actually had an accurate schematic! Tutorial Even then, they are not strictly necessary, they merely provide some protection from voltage fluctuations. It has the resistors on precisely the wrong pins that they should be on they should instead be on the select, clock, I/O and GND pins. This schematic is not only somewhat confusing, it is incorrect. However, the article on was somewhat dubious and provided inaccurate information, particularly with the schematic, but the general description of the steps was correct.

One source was the Rossmann Group Forum and another from. There actually turns out to be an alternative, but I only found two sources online that described the process. As I searched for methods to remove the firmware lock, I saw the recommendation to bring the computer to the Apple Store over and over, and that there was no other way. Once I got all the parts installed, the Mac powered on, but the problem of the firmware lock remained. To find out which was the case, I took the risk and purchased a brand new OEM battery off of eBay for $48, as well as a hard drive retention bracket. I wasn't sure whether it was due to the 60W charger I was using rather than the 85W recommended, or whether it was due to the different A1278 battery I had temporarily rigged to power the laptop up. The organization typically didn't bother with ordering specific parts for individual computers, as it wasn't worth the time or effort with the number of computers they needed to process, so I bought it for $30, as it had sat there for a long time and would likely have become e-waste.Īfter I got it home, I found that it would power on intermittently, and that it had a firmware lock. In the mess of computer parts, I found a 2012 MacBook Pro A1286 that was missing its battery, memory, and hard drive. However, the student whose basement had been formerly used for the organization had graduated, so all the hardware had been moved to the new location. The non-profit took donations of computers and refurbished them to be donated to families and other students without computer access at home.

I was volunteering for the non-profit he ran.

MAC PRO EFI FIRMWARE UPDATE USB FULL

I was recently at another TJ student's house helping organize his basement full of computers and computer parts.

MAC PRO EFI FIRMWARE UPDATE USB PASSWORD

For instance, one commenter on a thread I read explained that a family member had gifted the system to them, but no longer remembered the password nor had the receipt, leaving no options to reuse the computer. Many threads on the Internet show that this situation is often not a result of theft, however. This is understandable from Apple's viewpoint, as it can deter theft once the Mac is stolen, the thief cannot reimage the computer, making it useless. The problem with this system is that, if you are in the unfortunate situation of neither having the firmware unlock password nor the original proof of purchase, you have no other options. You can read more about this process here. The Official MethodĪpple's method of resetting the firmware password is not reproducible, as Apple generates an SCBO file that unlocks the EFI using their private key. In this post, I'll talk about the process that I figured out and what worked for me.

MAC PRO EFI FIRMWARE UPDATE USB HOW TO

What's not simple, however, is figuring out how to read and write to the EFI chip. However, I've found that there is another way, which I've been successful with for the unibody MacBook Pro-it's essentially just modifying a couple bytes in the EFI ROM, which should be simple. Removing a Mac's Firmware Password By Reflashing EFI ROMĪccording to Apple, the only way to remove an unknown firmware password from a MacBook (2011 and later) is to take it to the Apple Store with the original proof-of-purchase.