PR4100 Brick! Power light flashing blue, 4 second and 40 second reset does not work, Arrow up and down buttons not working

[Tfl]

First try calling WD support.
If they are unable to assist, feel free to use the following at your own risk.

Totally bricked PR4100 - drive LEDs blinking red?

I have added the rescue files for PR2100. Simply put all the files (not the rescue directory) on the root a FAT formatted USB drive. EFI startup.nsh uImage-rescue_md5checksum uRamdisk-rescue_md5checksum rescue_firmware uImage-rescue uRamdisk-rescue https://tafelpoowt.stackstorage.com/s/Q47W1gcf3ftmKlV

If you’re unable to restore the My Cloud OS, feel free to use my Ubuntu boot image to create a dump of your internal flash.

sudo dd if=/dev/mmcblk0 of=mmc.img bs=1M

Then check filesystems

sudo e2fsck /dev/mmcblk0p2
sudo e2fsck /dev/mmcblk0p3
sudo e2fsck /dev/mmcblk0p4
sudo e2fsck /dev/mmcblk0p5
sudo e2fsck /dev/mmcblk0p6

Afterwards, check for IO errors related to the internal flash.

dmesg