[G Pad 8.3 Q&A, Help & Troubleshooting] fabifabriciologan:
Hi everyone!

A while back i got an LG G Pad 8.3 (VK810) and decided to get everything up to date. Problem is that i could not update OTA to KitKat 4.4.2 from Jelly Bean 4.2.2. Someone on XDA had posted a way of manually updating the device by restoring a 4.4.2 backup that they had created via TWRP. So i rooted my device, flashed TWRP 2.7.0.1 and restored the proper files. When i booted up, everything worked great and Android was indeed on KitKat 4.4.2

Since then, i got a new tablet, and gave my G Pad to my younger brother. He loves it and used it every day, but recently came across a problem. He let the tablet die one day and when he plugged it in to charge, it booted into TWRP instead of Android. He had no idea what was up and just gave it to me to try and fix.

So i checked it out and no matter how many times i tried to power off the tablet and start it again it would not start up in anything but TWRP. It appears to be the normal TWRP recovery menu (V 2.7.0.1) but when looking through the internal storage, i can't see a single file (except for the folders (boot, cache, data, dev, etc.)). Also, the backup i created way back when does not appear when i try the 'restore' option. I am unable to to perform any kind of wipe, i cannot mount my tablet as USB storage, and on the report page, i see that the tablet cannot mount data, or internal storage.

Also worth mentioning, when i try rebooting into system, recovery, or simply powering off, i get a prompt saying "No OS installed! Are you sure you wish to..." From there, if i continue, it prompts me again saying "Install SuperSU? Your device does not appear to be rooted. Install SuperSU now? This will root your device." From THERE if i continue, it appears to load something for a second but then goes black and boots back into TWRP where everything is the exact same. Including the fact that i am still not rooted and without SuperSU.

Initially i assumed i would just flash a vk810 ROM off the XDA forums from my removable SD card and work from there. Problem with that is when i inserted the card, nothing appeared inside it (even after mounting it). Next i figured i could use ADB to push a vk810 ROM onto my tablet and flash it from TWRP. Problem with that is when i push the file, it appears in the designated destination but will not install on my device (I always get 'Failed" after it says...

"E:Unable to mount '/data'

Error flashing zip '/data/local/temp/cm-11-20140601-UNOFFICIAL-vk810_2.zip'

Updating partition details. . .

E:Unable to mount '/data'

E:Unable to mount internal storage." )

(Also worth mentioning, after i powered off for the night and continued working the next morning, the file i had pushed onto my device was gone)

Finally, i figured that since the ADB Sideload feature appeared to be functional on TWRP, I would use it to try and flash the ROM directly from my computer. Problem with THAT is that i got an error claiming that the rom is for "vk810" and mine is a "altev."

Side note to include just so i don't leave anything out is that I have tried using LG's flash tool to flash the stock KDZ image, but it won't even recognize my tablet (I've installed all the proper drivers).

I am at a total loss, and i would be incredibly grateful to anyone who could offer a helping hand. I have ADB and fastboot set up, it does recognize my device through the KOUSH universal driver i installed, and the device can be charged.

Does anyone have any idea as to how I can proceed from here?