The device is a dual system boot device.
"ALL" == both systems.
Depending on the specific firmware version providing "All", that also may include the device and owner specific data - of which there is no backup, unless you backed them up yourself.
The "main" system image file is too large for the fastboot to install. See post #8 of thread linked to above.
You must install the "diags" system image and matching kernel (both a size which can be handled by this fastboot) and then boot the device into the "diags" system and use those facilities to replace the "main" system.
And you do that using the commands in the kernel's initramfs (u-image) system.
Just keep on following the steps in the order described in the thread you linked to - DO NOT try to mix and match posts from different threads or to ad lib additional steps of your own invention.
Follow the process expressed in the posts of that thread.
We did eventually recover the device from the "Erase All" -
It is a long thread and I just can not see any reason for me to type it in here again - read and follow the original.
Last edited by knc1; 06-03-2018 at 10:27 PM.
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