Replace firmware bios chip
Hi all. My MacBook’s firmware password from three owners ago has recently activated itself again. I’m unable to get support from Apple, since I don’t have the original purchase receipt, and my research has shown me that if I replace the firmware bios chip on the logic board (with a new serial number) the problem will go away forever. Before I do that repair I have some questions that hopefully more knowledgable folks like you might confirm, answer, or clarify before I make some purchases and execute the repair.
- Is this the correct part (https://www.ebay.com/itm/BIOS-EFI-Firmwa...) I need to purchase and replace? (The model, A1466, and logic board, EMC 2925, appear to match.)
- This video (https://youtu.be/D4kqC2MaQjg) appears to have pretty thorough instructions on how to execute the repair; would anyone with experience be able to confirm this is good video?
- Although I’m fully comfortable removing and reinstalling the logic board and all the internal components needed to get to the chip, I have never soldered anything before. Is this a repair someone with zero soldering experience should attempt?
Also, let me know if there’s anything else I’m missing that I should know.
Many thanks!
crwdns2934109:0crwdne2934109:0
crwdns2944067:02crwdne2944067:0
Let’s make sure we are talking about the correct issue: Firmware password and iCloud password issues are quite different!
Review this doc If your Mac doesn't start up all the way
crwdns2934271:0crwdnd2934271:0 Dan crwdne2934271:0
Yes, it's the firmware password—with the lock icon—not icloud. This has also been confirmed by Apple when I brought it to them when the problem first occurred.
crwdns2934271:0crwdnd2934271:0 Jude crwdne2934271:0