[Essential Phone ROMs, Kernels, Recoveries, & Other] usafle:
No sir. I get the "power to pause the boot" screen and THEN another screen telling me the device is corrupted. I get the unlocked bootloader screen, that I'm familiar with. There is a screen following the unlocked bootloader message telling me that the device is corrupted and can't be trusted.

I've downloaded the factory images, ran the flashall.bat now it's in a bootloop. I get the unlock bootloader warning message then the corrupt message, phone reboots, essential logo comes up... rinse and repeat.

Ran Flashall.bat again and paid attention to the output... it seems to fail on slot "b":

E:\ADB>fastboot flash vendor_b vendor.img
target reported max download size of 536870912 bytes
sending 'vendor_b' (395040 KB)...
OKAY [ 1.203s]
writing 'vendor_b'...
OKAY [ 2.501s]
finished. total time: 3.705s

E:\ADB>fastboot flash cmnlib_a cmnlib.mbn
target reported max download size of 536870912 bytes
sending 'cmnlib_a' (221 KB)...
OKAY [ 0.089s]
writing 'cmnlib_a'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.092s

E:\ADB>fastboot flash cmnlib_b cmnlib.mbn
target reported max download size of 536870912 bytes
sending 'cmnlib_b' (221 KB)...
OKAY [ 0.089s]
writing 'cmnlib_b'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.092s

E:\ADB>fastboot flash cmnlib64_a cmnlib64.mbn
target reported max download size of 536870912 bytes
sending 'cmnlib64_a' (292 KB)...
OKAY [ 0.089s]
writing 'cmnlib64_a'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.093s

E:\ADB>fastboot flash cmnlib64_b cmnlib64.mbn
target reported max download size of 536870912 bytes
sending 'cmnlib64_b' (292 KB)...
OKAY [ 0.090s]
writing 'cmnlib64_b'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.093s

E:\ADB>fastboot flash tz_a tz.mbn
target reported max download size of 536870912 bytes
sending 'tz_a' (1868 KB)...
OKAY [ 0.094s]
writing 'tz_a'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.097s

E:\ADB>fastboot flash tz_b tz.mbn
target reported max download size of 536870912 bytes
sending 'tz_b' (1868 KB)...
OKAY [ 0.094s]
writing 'tz_b'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.097s

E:\ADB>fastboot flash hyp_a hyp.mbn
target reported max download size of 536870912 bytes
sending 'hyp_a' (264 KB)...
OKAY [ 0.089s]
writing 'hyp_a'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.092s

E:\ADB>fastboot flash hyp_b hyp.mbn
target reported max download size of 536870912 bytes
sending 'hyp_b' (264 KB)...
OKAY [ 0.089s]
writing 'hyp_b'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.092s

E:\ADB>fastboot flash rpm_a rpm.mbn
target reported max download size of 536870912 bytes
sending 'rpm_a' (228 KB)...
OKAY [ 0.089s]
writing 'rpm_a'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.092s

E:\ADB>fastboot flash rpm_b rpm.mbn
target reported max download size of 536870912 bytes
sending 'rpm_b' (228 KB)...
OKAY [ 0.089s]
writing 'rpm_b'...
FAILED (remote: Flashing is not allowed for Critical Partitions
)
finished. total time: 0.092s

E:\ADB>fastboot format userdata
CreateProcess failed: The system cannot find the file specified. (2)
error: Cannot generate image for userdata

E:\ADB>fastboot reboot
rebooting...

finished. total time: 0.001s