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how to bypass the ban on installation from external media? for installation from an installation flash drive? MacBook after DFU recovery and OS installation is possible only via the Internet! but I get this error.

I can't install MacOS. a minute before the end of the installation the error PKDownloadError 8 appears.

so you say dead dead CPU? 😁

PPBUS_G3H =8.71v 3V3_G3H=3.31v The story is like everyone else's MacBook, it doesn't work in the morning! I don’t see any traces of interference or flooding!

20v 0.000A-0.040А jumps. is not downloading ! PM_RSMRST_L=0V PM_SLP_S5_L=0V

looks like a problem with the ssd or t2 (in rare cases, RAM)

yes

PP5V_S4=0 PP5V_S5=5v PM_RSMRST_L=0 PM_SLP_S5_L=0

after replacing the BIOS I got power PPVCCCPU_S0G_PH1=0.955v PPVCCCPU_S0G_PH2=0944v but still no image

I'm sorry, I was measuring the test board just now! This one still doesn't have a download! 3V3_G3H =3.34v 3V3_S5=3.3v 3V3_S5G=0V 20V/0.000-0.040 not stable

3V3_G3H =3,34v 3V3_S5=3.3v 3V3_S5G=3.3V

after replacing U5000 PP3V3_G3H=0.331 in diode mode and in resistance mode PP3V3_G3H=2.922 kOhm. but it still won't turn on!

should make you happy. Since I took off the u9850 again, I decided to measure nickels! As I thought, if the 9850 missed something through itself then there will be some inconsistencies. and yes DP_INT_EG_AUX_N in short circuit (should be about 0.385 in diode mode) ! and now I’m 100% sure that...

so I bought a MacBook A2141 without a display and tested my displays and they both turned out to be working! That means the problem is on the board! The board that is being repaired does not see the connected displays! what defines the display?

At the prompt of Reformat, I connected to an external display and the system does not see the built-in display! Should it be like this or should it turn off when the display is detected? PP3V3_S0SW_LCD=3,3v all the time PP5_S0SW_LCD =5v all the time Should these voltages always be present or...

ACT_THERM_TRIP_L=1.5v SMC_PROCHOT_L=0.002v Are these indicators normal?

how do you change damaged SSDs?

99% of my MacBooks are being repaired and sometimes they have bad SSDs! So I’m interested because the device is not cheap! Does it support all MacBooks on T2? are you using this device?

What MacBook models does this programmer support? Is it worth buying?

what generates CPU voltage?