[Shield Tablet Q&A, Help & Troubleshooting] Rogark:
Where to start after all the troubleshooting I've done...:crying:

I have the NVIDIA Shield Tablet K1 and rooted it a while back, it was working fine for a long time, months.... Then I went to use my tablet again after about a week or so of not using it so it was dead of course, charged it. Turned it on and was welcomed by a lovely bootloop. So I restart it and go into my TWRP recovery and go to format the device only to find that none of my partitions are able to mount.

When I Factory reset I get the following...

Failed to mount '/cache' (Invalid argument)
E: Primary block device '/dev/block/platform/sdhci-tegra.3./by-name/UDA' for mount point '/data' is not present !
Failed to mount '/data' (Invalid argument)
Unable to recreate /data/media folder.
Updating partition details...
Failed to mount '/system' (Invalid argument)
Failed to mount '/cache' (Invalid argument)
Failed to mount '/data'
...done
Unable to mount storgae
Failed to mount '/data' (Invalid argument)
Full SELinux support is present.
Unable to mount /data/media/TWRP/.twrps
MTP Enabled
Updating partition details...
Failed to mount '/system' (Invalid argument)
Failed to mount '/cache' (Invalid argument)
Failed to mount '/data' (Invalid argument)
...done
Unable to mount storage

But it says successful, and pretty much same error if I try to format the data.

It won't let me mount any partitions even after the following commands which are successful in ADB

I have even tried the nice script NVIDIA made to flash everything as well.

fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash userdata userdata.img
fastboot flash staging blob

Some extra things I have noticed was that my [nvtboot] (version *) appeared as a weird looking symbol , like a circle with a square and a triangle scrambled together and same as my boot.

^^This was the first time I noticed this

Then when I flashed the everything even the bootloader it made this symbol disappear and changed it to [nvtboot] (version 19951_588.2760)

The device still would not boot.

I then loaded TWRP and to my surprise it worked and I got back to square one with the inability to mount any partitions. And for each partition showed 0MB.

I think the device may be bricked but I want to save it because I loved my tablet. It's in pristine condition and is about a year old only after the RMA turn ins for the old model.

When I do the flashall.bat which I am doing right now. I reboot and it still does not boot up.

target reported max download size of 570425344 bytes
sending 'recovery' (10286 KB)...
OKAY [ 0.450s]
writing 'recovery'...
OKAY [ 0.413s]
finished. total time: 0.866s
target reported max download size of 570425344 bytes
sending 'boot' (6996 KB)...
OKAY [ 0.297s]
writing 'boot'...
OKAY [ 0.276s]
finished. total time: 0.576s
target reported max download size of 570425344 bytes
erasing 'system'...
OKAY [ 0.232s]
sending sparse 'system' (556862 KB)...
OKAY [ 23.301s]
writing 'system'...
OKAY [ 22.077s]
sending sparse 'system' (547639 KB)...
OKAY [ 22.936s]
writing 'system'...
OKAY [ 20.968s]
sending sparse 'system' (127570 KB)...
OKAY [ 5.434s]
writing 'system'...
OKAY [ 4.940s]
finished. total time: 99.897s
target reported max download size of 570425344 bytes
erasing 'userdata'...
OKAY [ 1.758s]
sending sparse 'userdata' (557052 KB)...
OKAY [ 23.332s]
writing 'userdata'...
OKAY [ 18.589s]
sending sparse 'userdata' (557052 KB)...
OKAY [ 24.195s]
writing 'userdata'...
OKAY [ 18.511s]
sending sparse 'userdata' (517936 KB)...
OKAY [ 22.409s]
writing 'userdata'...
OKAY [ 17.156s]
sending sparse 'userdata' (129718 KB)...
OKAY [ 5.656s]
writing 'userdata'...
OKAY [ 4.516s]
finished. total time: 1028.914s
target reported max download size of 570425344 bytes
sending 'staging' (18041 KB)...
OKAY [ 0.783s]
writing 'staging'...
OKAY [ 0.659s]
finished. total time: 1.445s
Press any key to exit...

I am open to all troubleshooting steps you guys can throw at me. I am very tech savvy and hold a Tier II IT position currently with multiple certifications. I for the life of me can't figure this one out. I have been working on this one for weeks and weeks and decided to post on here to get some assistance.