Mac EFI Toolkit

[mtherana]

Re: Mac EFI Toolkit

Thank you Sir Does it Support A1398

[MuertoGB]

Re: Mac EFI Toolkit

Thank you Sir Does it Support A1398

Yes, it supports anything with an accessible EFIROM. Dump the SPIROM contents, open it with the application.

[volinakis]

Re: Mac EFI Toolkit

hi, how can I remove MDM with your tool? is enough to edit serial?
thank you.

[MuertoGB]

Re: Mac EFI Toolkit

hi, how can I remove MDM with your tool? is enough to edit serial?
thank you.

Yes, enter a clean serial number in the patcher, and select the following so you don't have to perform an NVRAM reset on boot.

Clear VSS Store
Clear VSS Backup Store

[volinakis]

Re: Mac EFI Toolkit

Yes, enter a clean serial number in the patcher, and select the following so you don't have to perform an NVRAM reset on boot.

Clear VSS Store
Clear VSS Backup Store

ok, thank you. What means "clean serial number"? I modified 3 characters randomly, cleared VSS store and replaced ME and now is not asking for MDM enrollment at setup.

[MuertoGB]

Re: Mac EFI Toolkit

ok, thank you. What means "clean serial number"? I modified 3 characters randomly, cleared VSS store and replaced ME and now is not asking for MDM enrollment at setup.

This is essentially what I mean, use a serial number that isn't bound to MDM. Glad to hear it worked for you.

[reformatt]

Re: Mac EFI Toolkit

I usually use one off from the many base covers I have lying around. The danger of using a random one is that it is potentially bound to another MAC elsewhere. Not so much an issue with the older Mac's these days I guess but the possibility is there.

This is why Apple stopped the iCloud lookup service years back, as China was using it to find valid (unlocked) serial numbers by changing the last 3 digits. They were then having conflicts with iCloud on legitimate devices as a result and having to replace them for the real customers. Was great being able to buy stuff and being able to check on it in advance....not any more.

[MuertoGB]

Re: Mac EFI Toolkit

This is why I prefer a clean donor serial from a dead board. Someone could end up MDM locking another persons SSN.

[Maxpower3]

Re: Mac EFI Toolkit

hi, how can I remove MDM with your tool? is enough to edit serial?
thank you.

you can use BBS to change serial until 2017 without removing eeprom

https://www.badcaps.net/forum/showpo...10&postcount=1
or
https://www.badcaps.net/forum/showpo...59&postcount=2

[volinakis]

Re: Mac EFI Toolkit

you can use BBS to change serial until 2017 without removing eeprom

https://www.badcaps.net/forum/showpo...10&postcount=1
or
https://www.badcaps.net/forum/showpo...59&postcount=2

right, thank you, I discovered your tool after I modified bios. I did try it on A1466 2017 and works well.
@Maxpower3
@MuertoGB
Thanks again for sharing your work, is very useful!

[classicandy]

Re: Mac EFI Toolkit



Yes, enter a clean serial number in the patcher, and select the following so you don't have to perform an NVRAM reset on boot.

Clear VSS Store
Clear VSS Backup Store

Hi, can I also use this tool to remove MDM on an Air M1 ?

[oxonater]

Hi, can I also use this tool to remove MDM on an Air M1 ?

Hey peops

As above I don't think this method works with M1 as there is no serial saved in the ROM chip itself

Great tool though

OXY 😉

[macospk]

This can support a2141 with bridge os 8.3?

[oxonater]

Hi all

Just a quicky any reason i'm getting invalid image on T2 dumps ?

Thank OXY

[reformatt]

This tool is for EFI dumps for pre-T2 machines. T2 SPI ROM dumps aren't EFI , however I think Muerto said he may consider supporting them down the track though.

[oxonater]

Ah ok makes sense

Thanks OXY 😀

[reformatt]

Just noted the other day when I was upgrading a 2017 iMac (has USB C ports on the rear in addition to the USB A ports) that it appears to have an updated NVMe driver in the BIOS. I say this because I tried one of my Crucial P3 SSD's (and adaptor) and was detected fine. 2015 A1466/A1502 etc currently do not detect these newer drives. Double checked this again with BIOS 489.0.0.0 in the 2015 MBA and still doesn't work.

[MuertoGB]

Correct, the toolkit does not support T1, or T2, currently. Possibly in the future.

Sorry for the lack of updates, I've been extremely busy lately. Version 1.2.0 will come later this year, a time frame is not set.

NOTE: I've identified an issue when clearing the NVRAM stores, there is more to clearing the store header than I though, therefore sometimes when a user clears the NVRAM store the device may fail to boot. A patch will be applied for the next update.

[TeslaK]

Hi,
i have a question. i changed my macbook pro serial number but mdm popup still came time to time. is there a way to stop it?
Thanks.

[MuertoGB]

Hi,
i have a question. i changed my macbook pro serial number but mdm popup still came time to time. is there a way to stop it?
Thanks.

Some things to check:
1. Is the replacement SN MDM attached? Is it known clean from MDM?
2. Did you clear the NVRAM on boot after replacement? (Do not use MacEfiToolkit to clear the NVRAM at the moment, use key commands).
3. Did you re-install MacOS after the SN change? If not, the flag might be written to the OS and you'll need to format and re-install again.

In the future, if you're just changing the SN, it's best to use BBS as it saves you from dumping the firmware.
https://www.badcaps.net/forum/troubl...01#post1864401