DFU mode requires a second Mac which is connected via USB-C cable as explained here [https://iboysoft.com/wiki/dfu-mode-mac.html|DFU Mode on Mac: What it is and How to Enter it] And you are very limited on what you can do, It's intended to fix a firmware error and you can only reborn only some of the firmware blocks with the same CRC based block. And then the internal security check-sum is validated Apple did a very good job preventing anyone from installing backdoors into the users space.
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DFU mode requires a second Mac which is connected via USB-C cable as explained here [link|https://iboysoft.com/wiki/dfu-mode-mac.html|DFU Mode on Mac: What it is and How to Enter it] And you are very limited on what you can do, It's intended to fix a firmware error and you can only re-burn only some of the firmware blocks with the same CRC based block. And then the internal security check-sum needs to be validated Apple did a very good job preventing anyone from installing backdoors into the users space.
From what you are stating your battery is gone and you might have additional damage within the logic board as running the battery to death tends to over stress the charging logic in this series when you try to charge a fully dead battery.
[product|IF123-098-5] and the guide [guide|133428]
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Here's the needed steps to diagnose your logic board [https://www.youtube.com/watch?v=PDKlWu1eDFA&t=825s|A1708 Macbook Pro 20v 0amps not turning on] Louis jumps over the port MUX chips to the PPBUS issue which is a common issue of a shorted out cap.
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Here's the needed steps to diagnose your logic board [link|https://www.youtube.com/watch?v=PDKlWu1eDFA&t=825s|A1708 Macbook Pro 20v 0amps not turning on] Louis jumps over the port MUX chips to the PPBUS issue which is a common issue of a shorted out cap.
DFU mode requires a second Mac which is connected via USB-C cable as explained here [https://iboysoft.com/wiki/dfu-mode-mac.html|DFU Mode on Mac: What it is and How to Enter it] And you are very limited on what you can do, It's intended to fix a firmware error and you can only reborn only some of the firmware blocks with the same CRC based block. And then the internal security check-sum is validated Apple did a very good job preventing anyone from installing backdoors into the users space.
From what you are stating your battery is gone and you might have additional damage within the logic board as running the battery to death tends to over stress the charging logic in this series when you try to charge a fully dead battery.
[product|IF123-098-5] and the guide [guide|133428]
Here's the needed steps to diagnose your logic board [https://www.youtube.com/watch?v=PDKlWu1eDFA&t=825s|A1708 Macbook Pro 20v 0amps not turning on] Louis jumps over the port MUX chips to the PPBUS issue which is a common issue of a shorted out cap.
I would focus my efforts on these.