It's a newer mac and the pram isn't an option, sadlyI assume you did an SMC and PRAM reset ?
That's what I was afraid of. My actual question is. If I do that to turn off firmware password will I be able to safely toggle back and forth?You will need to take it to a Mac shop that can remove firmware passwords but hooking an EFI programmer to remove the lock.
Exactly which Mac do you have?It's a newer mac and the pram isn't an option, sadly
You can reset the NVRAM but it won't make a difference as the password is in the firmware. Saving the password in NVRAM would defeat the purpose of locking out unauthorized users. The disadvantage is forgetting the password.2013 macbook pro 13" 2.6 i5
So assuming I get the firmware password removed I should be able to boot from both, correct? External when. I need and internal, even though they are different systems? But when i use older os i won't see the newer harddrive, which is fineI assume you did an SMC and PRAM reset ?
That's a non-retina.maybe it's something like this? I can't even see a soldering iron looks damn easy
It never shows how he actually removed either bios chip.maybe it's something like this? I can't even see a soldering iron looks damn easy
He used a heat gun. It's one of the few practical ways to remove surface-mount chips.It never shows how he actually removed either bios chip.
The video showed him briefly holding a heat gun over the chip he removed from the first motherboard. It does not show how he "attached" that chip to the motherboard that came from inside the Mac.He used a heat gun. It's one of the few practical ways to remove surface-mount chips.
The video shows him starting the removal process, but it doesn't show the full process. It's not easy, in the sense that a beginner can do it without training or practice. You need to know what you're doing, or you will likely cause damage.
Yes, you will be able to toggle back and forth.That's what I was afraid of. My actual question is. If I do that to turn off firmware password will I be able to safely toggle back and forth?
When restarting holding option to switch that way it has a firmware lock and, same problem, the previous owner doesn't remember it or have original receipt so I can't get past it.
It would need to be soldered on.The video showed him briefly holding a heat gun over the chip he removed from the first motherboard. It does not show how he "attached" that chip to the motherboard that came from inside the Mac.
Yes, the older pre 2012 MBP will need the 8pin EFI chip replaced. Had it done on my 2011 MBP to remove the password.It would need to be soldered on.
If you can boot from an external drive by holding down the option key to select the drive, the MacBook shouldn't have a firmware password.I have somewhat of a similar issue. My MacBook Pro A1278 13.3" Mid 2012 i7 2.9 GHz recently locked. I have a complete back up clone copy (Carbon Copy Cloner) of the system done every night to an external hdd. Several months ago my internal hard drive was accidentally erased and reformatted (actually SSD). Thankfully my backup (hdd) was an exact clone bootable copy, so I was able to clone my clone back to my internal SSD. At that time I also did an upgrade to the OS. As I said, this was several months ago and everything was running perfectly until earlier this week when somehow my system started up to a 4-digit firmware passcode screen, which after several failed entries ended up at the pad lock screen. I have no idea why as I had never enabled this feature, and wasn't in the process of starting, changing or upgrading anything.
Aside from visiting a Mac repair shop in order to remove the apparent passcode, my question is can I bypass the firmware lock by installing the external clone hdd internally? I tried start up externally with no luck, only to end up at the screen with a folder and ? icon. I have tested the clone backup on another Mac and it starts and runs externally just fine.
Any help would be greatly appreciated!
Craig
Installing the cloned drive is unlikely to work. The EFI locking is probably based on different factors including the drive model #, serial #, OS, etc. If it was not based on these factors, it would render EFI locking much less effective because it could be bypassed by changing the drive and is one reason the option key does not allow you to select an alternative boot drive.Thank you for the quick reply. As I stated, the successful external Option key boot from the clone was a test on a different Mac (same yr/model). My external Option key boot attempt from the clone on the "locked" Mac was unsuccessful, ending up at the folder/? screen.
Would installing the working clone internally on the "locked" Mac bypass the firmware password? Is there any possibility of "locking" the clone by installing it?