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The R1981 region had oxidation, I replaced the components, but no result. AUD_IP_PERIPHERAL_DET 21mV without the headphone AUD_IP_PERIPHERAL_DET 3.3V with the headphone connected.

Yeah, I still get the same error.

I changed the Flat and IO POWER several times, but it didn't work, can you tell me what it could be ?

I bought the BY-T200, got the Bios file from a working Mac of the same model. When I try to restore or revive, it gives the error.

The mac starts in DFU mode. I put it to restore, but in the mid-restore, it has error 9.

So error 9 has no solution?

Yes, DFU works.

This mac I managed to restore and install macOS Mojave, but the client installed Catalina and started showing kernel error. Since then I can't restore anymore.

If I try another version of BridgeOS ?

maintenance expired. It could be a defect in the CD3217, as the error is referring to a lack of communication on the USB-C.

yes, same result.

The mac stays in DFU, but does not restore T2, it shows error 9.

yes.

Before it would turn on, reboot, and show an error

L7410 0,004V

The client tried to format and install Catalina and ended up locking the mac, I tried to restore the T2, but it shows the following error "AMRestoreErrorDomain error 9 - Failed to receive a message from the device, might be a connection problem with USB host. (Communication error, possibly USB...

Replaces the U7400, but does not power up

I can't download this BIOS, I need it.

I can't download this BIOS, I need it.