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Well, I'll start with that and also order a programmer, I'm not totally sure what the ME region is to be honest, but I'll do some reading instead of taking up your time with that.

There's been some recent developments with reading sysconfig data from dead iPhone NANDs, generally it's more focused on when the damage prevents access to the main partitions but still allows the sysconfig regions to be read with some software tricks, but I've also had success with using this...

In the future, how would you recommend finding a partial secondary short with low power consumption if not by injecting on the main rail? I started at 1V and worked up very gradually while monitoring the outputs of every independent fet I could find to determine that there wasn't a significant...

Great, I ordered a BIOS chip on eBay programmed with my serial and will let you know how this turns out. I primarily do iPhone board repair and data recovery, so I don't have all the fancy Mac programmers, and at the moment it's probably a better deal for me to pay someone else to have figured...

Okay, did a lot of measurements and determined the CPU fets should be good, so I injected 13.1V into PPBUS_G3H, consumed about 250mA and U9580 got warm, found PP2V5_NAND_SSD0 to have low resistance (About 6 Ohms, but randomly drops to nearly 0 on occasion), so I injected 2.5V into that rail...

Thank you, and for your fast response! Yes, CPU supply is a stable 1.8V, just seemed particularly low to me but perhaps not. I don't have a programmer but will either order one or a pre-programmed BIOS chip if you think this is a likely root cause.

I don't have a working USB-C machine on hand to test with at the moment, but given the above update, I believe that indicates a certain hardware issue?

Actually PPBUS_G3H is 0.099V diode drop to ground, which is surprising given it didn't beep during an initial quick check. Every CPU related coil measures approx 0.1V drop to PPBUS_G3H, what all do I need to check before safely injecting power?

It's not too often I see a device where all of the USB-C ports pull basically zero current (Starts at 0.01A and drops to 0.0A) with no looping or other activity, but that's the case on this 820-01700-05. No liquid damage or issues spotted with a visual inspection, pretty through check for shorts...

PPBUS is at 8.56V, only thing getting warm is the CPU. CPUVR_PHASE1&2 have a 0.011V diode drop with red probe on ground, this feels a bit low? ~1.8V (measurement starts at 0.4V and rises) diode drop referenced to PPBUS so I don't think it's a shorted fet. Now I'm afraid I might have a good ole...

820-00165-A with no signs of damage. Supposedly suddenly died during an SSD upgrade and subsequent software reinstallation at another shop. When the display is plugged in, the device rapidly boot loops with a chime every 2-3 seconds during which the internal display is blank with backlight, SMC...