kjchatman1
Member
i tried a revive it with the configurator and it gets stuck at step 4 of 4 installing system. force quitting the configurator is the only option. the board remains in dfu mode afterwards.
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820-01958 stuck in dfu mode at 5v
- Thread starter kjchatman1
- Start date
Any history available?
Try reflashing Soc ROM; don't forget to make backup first.
Try reflashing Soc ROM; don't forget to make backup first.
kjchatman1
Member
writing the Soc ROM didn't change anything. I noticed that ppdcin is 19v only when a charged battery is attached to the board. Otherwise the amp meter sits at 5v 0.000a and it is stuck in dfu
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Still can't complete DFU, with both charger and battery connected?
Check UPC_I2C_INT_L level.
Check UPC_I2C_INT_L level.
kjchatman1
Member
UPC_I2C_INT_L stays at 0v
That means you have a problem in USB-C area.
May have a bad CD3217, or associated component.
May have a bad CD3217, or associated component.
kjchatman1
Member
i see a lot of files for the u3060 being posted in forums. I'm assuming that could be the problem
You can try; don't forget to make backup first.
kjchatman1
Member
replaced u3100 and u3200 today and it is still stuck in dfu mode and upc_i2c_int_l is 0v. still waiting on the programmer for u3060
kjchatman1
Member
resistor r3441 isn't on the board and i'm not sure if it is supposed to be. is it?
Some of the resistors from page 27 are not soldered.
They are marked on the BOM OPTION table.
Is better to compare with good board.
They are marked on the BOM OPTION table.
Is better to compare with good board.
kjchatman1
Member
i'm getting 20v after programming u3060 with an original file. the ppbus is still 12.3v and the device stays in dfu even after running the configurator. upc_i2c_int_l is still 0v even though ppdcin is 20v.
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Got 20V with just charger connected (no battery)?
kjchatman1
Member
yes. the 20v shows up on both ports with no battery attached
Can you complete DFU restore?
kjchatman1
Member
not without error dfu to dfu. it basically stays in dfu mode. i never have to put it in dfu mode
kjchatman1
Member
i tried plugging in a charger in one port while doing a restore with the dfu port and apple came up on the display. apparently that 5 volts from the usb port of the other machine wasn't enough. Now it's up and running again
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Possibly T2, or SSD problem...
Hopefully, not a massively unrelated question, didn't want to start a new thread just for this:
When doing a DFU revive/restore on a board that is drawing 5v 0.02a, as described in repair.wiki, is that power sufficient for the device to show up on configurator and complete the restore / revive ? I mean, during the revive, the screen comes up etc, would that all work ok with the power from the host Mac ? Or a separate charger / battery required ?
When doing a DFU revive/restore on a board that is drawing 5v 0.02a, as described in repair.wiki, is that power sufficient for the device to show up on configurator and complete the restore / revive ? I mean, during the revive, the screen comes up etc, would that all work ok with the power from the host Mac ? Or a separate charger / battery required ?
Peoples reported on the Internet about some boards which didn't complete DFU without both charger and battery connected.
So be aware of that; some kind of trial and error applies.
We don't have confirmed list of models which pass DFU only with charger,
So be aware of that; some kind of trial and error applies.
We don't have confirmed list of models which pass DFU only with charger,