More actions
(Test 2 update.) |
(Test 2 update.) |
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Data (Thunderbolt): Ok (both receptacles). | Data (Thunderbolt): Ok (both receptacles). | ||
Conclusion: Nothing abnormal, | Conclusion: Nothing abnormal within the OS, but executing a DFU Restore is not possible anymore. | ||
Revision as of 14:17, 26 September 2025
| Apple ACE3 Controllers | |
|---|---|
| Manufacturer | Apple |
| Code name | ACE3 |
| Release date | 2023 |
| Device type | Laptop |
This is a placeholder to document testing done with ACE3 controllers on Macbooks, and add knowledge tidbits as they trickle down. Once we understand these controllers, the page will be reorganized as a proper explanation on the ACE3.
Testing on a working A3113
Types of controllers encountered so far: SN25A23P.
ACE configuration: Controllers for receptacles are in Master - Slave configuration, Magsafe controller is Master.
Test 1: Swapping UF400 and UF500
Test date: 2025.09.26
Description: Just swapping the two controllers, from that board.
OS: Sonoma.
The device seems to work right away, and normally.
DFU Restore (Tahoe) : Ok.
Display output: Ok, both receptacles.
Charging: Ok (both receptacles + Magsafe).
Data (Thunderbolt): Ok (both receptacles).
Conclusion: Nothing abnormal, it looks like both are interchangeable.
Test 2: Replacing UF400
Test date: 2025.09.26
Description: Replacing UF400 by an SN25A23P bought new (Mobilesentrix).
OS: Tahoe.
DFU Restore (Tahoe): Impossible. The board is placed in DFU mode by jumping PP1V25_S2 to PMU_UPC_FORCE_DFU, confirmation with DFU_STATUS. But it does not appear in the Finder on the host computer. Using the wrong receptacle (closest to trackpad), the target Mac appears in the Finder, but as expected cannot be restored (error 4042, timeout).
When connecting to the correct receptacle, the Terminal of the host computer outputs the following, indicating that the target Mac is detected:
Broadcast Message from root@David
(no tty) at 15:04 CEST...
amai: UARP Restore Initialize Common.
Broadcast Message from root@David
(no tty) at 15:04 CEST...
amai: Ace3UARPExternalDFUApplePropertyUpdate.
Broadcast Message from root@David
(no tty) at 15:04 CEST...
amai: Ace3UARPExternalDFUApplePropertyUpdate.
Broadcast Message from root@David
(no tty) at 15:04 CEST...
amai: Ace3UARPExternalDFUPropertiesComplete.
Display output: Ok, both receptacles.
Charging: Ok (both receptacles + Magsafe).
Data (Thunderbolt): Ok (both receptacles).
Conclusion: Nothing abnormal within the OS, but executing a DFU Restore is not possible anymore.