mich6el
Member
Last Activity: 02-27-2026, 08:43 AM
Joined: 12-10-2015
Location: Kiev
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I returned my native t2 chip, but there is still no image.​... -
Imac 2020 a2115 no image after reblays T2 Security chip
Hello! Has anyone encountered problems on the Imac 2020 27 inches with a T2 chip? I had to replace 2 T2 chips on two iMacs, the first one was successfully replaced, tested and given to the client. The second iMac after replacing the T2 is flashed, the system is installed through the target mod, it boots into the system, you can hear me tapping on the keyboard, but the image does not display (and to an external monitor​). I reballed the T2 chip, changed the processor, RAM, display. No positive result! My friend said that he had 2 such devices and on both of them, after replacing the T2 boards,... -
Re: T2 Chip Programmer Tool
NO, it was empirically established that icloud is in T2 and not in SOC ROM! See post #301
P.S. I soldered the blocked T2 to the working board and saw the activation window. Icloud in T2 chip 150%...Last edited by mich6el; 08-10-2022, 12:51 PM.Leave a comment:
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Re: T2 Chip Programmer Tool
write me in telegram, number in private messages...Leave a comment:
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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?...Leave a comment:
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Re: T2 Chip Programmer Tool
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%...Last edited by mich6el; 08-09-2022, 11:19 AM.Leave a comment:
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Re: T2 Chip Programmer Tool
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?...Leave a comment:
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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!Leave a comment:
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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?Last edited by mich6el; 08-06-2022, 02:32 PM.Leave a comment:
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Re: T2 Chip Programmer Tool
i have only one board witрout fmm...Leave a comment:
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Re: T2 Chip Programmer Tool
but a2141 and a2179 have different flex of touch id. i want make fully worked board. but all my a2179 have dead cpu too. Sorry I have one chip set for experiment...Last edited by mich6el; 07-05-2022, 01:32 PM.Leave a comment:
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Re: T2 Chip Programmer Tool
Hello! I have successfully completed the reballing of chips (T2, Nand, Wi-Fi) removed from the dead processor board. When I get the Activation Locked Board, I will be able to experimentLeave a comment:
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Re: MacBook Air 13" A1932 Wont DFU, Turns on etc.
the battery controller is blocked, the laptop has been sitting for a long time, maybe. you need to connect a working battery, if the laptop does not see the battery, it will slow down. try booting the laptop by holding the shift keyLeave a comment:
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Re: T2 Chip Programmer Tool
yes. i know man)...Leave a comment:
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Re: T2 Chip Programmer Tool
pardon, 3 spi? but motherboard have 1 spi chip (SOC rom)...Leave a comment:
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Re: T2 Chip Programmer Tool
Replace t2 not a problem. Will the laptop be activated with the original serial number and ssd? after replays ONLY t2 chip?...Leave a comment:
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Re: T2 Chip Programmer Tool
Hi! Glory to Ukraine! If I have two boards 2179 with icloud and water damaget without icloud. replays t2 chip witout ssd and spi can fix activation lock?...Leave a comment:
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Re: T2 Chip Programmer Tool
Hi! Glory to Ukraine? Did you manage to replace the chipset? I also have 2 2338 boards and I don't know which set to change: WI-FI, NAND, M1, SPI...Leave a comment:
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