T2 Chip Programmer Tool

[LevanGood]

Re: T2 Chip Programmer Tool

1. Check resistances on all coils near PMU (a2179 u7800).
2. Check the resistances on all coils of the board.
3. Voltages do not jump?
4. Check if the SOC rom chip is installed correctly?
5. Do you enter dfu mode through a test point or a key combination? If the laptop does not see the SOC ROM it will be in DFU by default
6. Are you flashing a laptop with a connected power supply and battery?

It was a good-working laptop before T2 replacement
1. Everything’s ok
2. See #1
3. With the unlocked T2’s soc rom mac reboots when current becomes 0.9A (but still no picture). With original soc rom from the locked board current is 1.96A, no reboots, both fans are on 100% speed but Apple Configurator still can’t restore the device.
4. Yep it is.
5. I have to pull the mac in DFU with a key combination on kb.
6. Yep. Battery is 100% charged and dc power supply connected.

[mich6el]

Re: T2 Chip Programmer Tool

Hi! Just done T2+soc rom replacement.
Mac charges, touchpad becomes active, it can be connected in DFU mode but restoring T2 in Apple Configurator can't be finished because restore freezes in the very end of progress bar((
And yep I have black screen too. How did you deal with it?

P.S. USB init tester doesn't show init(

1. Check resistances on all coils near PMU (a2179 u7800).
2. Check the resistances on all coils of the board.
3. Voltages do not jump?
4. Check if the SOC rom chip is installed correctly?
5. Do you enter dfu mode through a test point or a key combination? If the laptop does not see the SOC ROM it will be in DFU by default
6. Are you flashing a laptop with a connected power supply and battery?

[mich6el]

Re: T2 Chip Programmer Tool

Have you tried to copy the firmware from a flooded macbook to a locked one?

Yes. But it not working, after replays only soc rom I have windows "activation server not found". I think t2 chip and sock rom must be together.
I conducted a second experiment, if you solder the blocked T2 to the working board, then we get the activation window. icloud in t2 chip 150%

[mich6el]

Re: T2 Chip Programmer Tool

Which bridgeOS was your MacBook running BTW?

Unfortunately I didn't test it, the laptop was showing the activation window. How to check it? Is this information in the SOC ROM chip?

[LevanGood]

Re: T2 Chip Programmer Tool

Hi people! The experiment has ended successfully! After replays T2 chip and SPI from water damaged board and restore via dfu mode - i have clear activation window and a can install OS system from recovery! Сalculator was fucked!

Hi! Just done T2+soc rom replacement.
Mac charges, touchpad becomes active, it can be connected in DFU mode but restoring T2 in Apple Configurator can’t be finished because restore freezes in the very end of progress bar((
And yep I have black screen too. How did you deal with it?

P.S. USB init tester doesn’t show init(

[serkrn]

Re: T2 Chip Programmer Tool

Hi people! The experiment has ended successfully! After replays T2 chip and SPI from water damaged board and restore via dfu mode - i have clear activation window and a can install OS system from recovery! Сalculator was fucked!

Have you tried to copy the firmware from a flooded macbook to a locked one?

[kevingill]

Re: T2 Chip Programmer Tool

Hi people! The experiment has ended successfully! After replays T2 chip and SPI from water damaged board and restore via dfu mode - i have clear activation window and a can install OS system from recovery! Сalculator was fucked!

Which bridgeOS was your MacBook running BTW?

[curiositymaster]

Re: T2 Chip Programmer Tool

warn someone buying a new mina tool. Apple did something to T2 and it doesn't work anymore

From what you have here, this will still work; you only need to try it again and make sure your Mac is connected to the internet.

[mich6el]

Re: T2 Chip Programmer Tool

Hi people! The experiment has ended successfully! After replays T2 chip and SPI from water damaged board and restore via dfu mode - i have clear activation window and a can install OS system from recovery! Сalculator was fucked!

[Timp74]

Re: T2 Chip Programmer Tool

Without being too informed on the current status/progress of a T2 bypass or unlock, can I ask a potentially-dumb question?

Would it be possible to somehow identify the contact information (name/email) of the iCloud account owner of a particular board, and then simply attempt to contact them to have the lock removed? Of course many people wouldn't respond, and you'd still be stuck with a locked board, but I was curious if that information would somehow be stored on the board. I'd imagine that info is securely stored/encrypted in the SE, so probably impossible to get to, but was just curious.

On a icloud locked a2179, I found the user's email in plain text using checkra1n and running the "strings" command on the NVRAM file in /var/private/db. I think that was the file and location.. Unsurprisingly the user didn't reply to my email or iMessage about unlocking..

[mich6el]

Re: T2 Chip Programmer Tool

Hi! my t2 chip transplant experiment failed. I successfully soldered the t2 chip but my board most likely has an underestimated resistance PP1V1_S3. This piece of shit, that I bought on ebay turned on black screen, after 5 times gomg and apple, before replayse t2 chip, after i have cycle dinamic voltage on PP5V_G3S. FUCKING CALCULATOR! I think i have bad cpu on this board to. Who can measure resistanse of PP1V1_S3?

[styleangel]

Re: T2 Chip Programmer Tool

warn someone buying a new mina tool. Apple did something to T2 and it doesn't work anymore

[kevingill]

Re: T2 Chip Programmer Tool

This was discussed a while back and I actually bought one to try out.
But sadly, there doesn't appear to be any purple mode software that works with Macs.

[Brais]

Re: T2 Chip Programmer Tool

Hi, just someone who could ask this question:

Its possible to unlock an Imac or a Macmini with T2 chip and an icloud activation lock with the serial hardware method?

This item will remain as new, no locks , no icloud even with DFU mode resets?

The only condition is the ibridge version as explained?

Many thanks

[serkrn]

Re: T2 Chip Programmer Tool

no.

what options are there?

[lamo]

Re: T2 Chip Programmer Tool

Hello
I reset the Macbook air 3 2o 2o comes out of the ground (bridge6) and activated icloud.
If I flash the T2 chip with Unlock firmware with soldering, will it help to lower the bridge and bypass icloud activation?

no.

[serkrn]

Re: T2 Chip Programmer Tool

Hello
I reset the Macbook air 3 2o 2o comes out of the ground (bridge6) and activated icloud.
If I flash the T2 chip with Unlock firmware with soldering, will it help to lower the bridge and bypass icloud activation?

[Brais]

Re: T2 Chip Programmer Tool

Many thanks for reply, seems logic, i will try and see what happened.


About T2 chip in a Macmini for exemple, is possible to remove Icloud with the serial method?

Thanks for help

[Stephen]

Re: T2 Chip Programmer Tool

So,

Changing serial method will work on any T2 chip model, and sets it as a new device( any resets and updates will work as expected)?

And what happened if you register 2 different Iclouds with the same serial number?

Original first iCloud will always kick back. No matter what you do, the first registered iCloud will always come back first. Meaning it needs to be removed. The second iCloud will not even exist, only when you use the device in of itself.

[Brais]

Re: T2 Chip Programmer Tool

So,

Changing serial method will work on any T2 chip model, and sets it as a new device( any resets and updates will work as expected)?

And what happened if you register 2 different Iclouds with the same serial number?