Samsung Galaxy tab 10.1 stuck on boot screen (bricked) This is going to be a long story because my tablet is just having problems left and right.
Firstly, I received this tablet (SCH-i905) as a gift with cyanogen mod already pre-installed. Thus, in attempts to remove it, I tried to do a clean format in the android settings, but that didn't work.
Then I tried the manual restore to factory settings, holding down the volume button + power button. Selected wipe data/factory reset. This didn't work either, cyanogen mod was still installed.
Then I decided to unmount and mount the system and some other things. That's when I can't even start up my Tablet anymore. It is stuck at the load screen Samsung GALAXY Tab 10.1 .
Now I am trying to flash the original hardware to my tablet using Odin, however I cannot find the rom. I also look into the official samsung page, and downloaded the EXE for the USB drive, but can't run ADB.
Where do these ROMs exist or what other alternatives do I have?
EDIT: In the advanced menu, if I select show log, I get the following:
Checking for extendedcommand
Skipping execution of extendedcommand, file not found...
Can't partition no vfat: datamedia
can't format unknown volume: /external_sd
can't format unknown volume: /emmc
unknown volume for path [/sd-ext]
can't remove '/sd-ext/dalvik-cache' No such file or directory
EDIT 2 :
I also tried using Odin with PDA_SIGNED_P7105.tar.md5 . Now my device is in an infinite boot loop.
There is only one possible way to restore your device after unmounting system and/or bricking it.

And that is to flash (via Odin) the original stock firmware in a file named : PDA_HC31_EG01Ba_AP352081user_CP1033580_LTE20110704_0708.tar

Nothing else will work. Only this one file will be able to unbrick this device.

The procedure is quite easy.

On the device


Hold volume up + Power 
Select Odin mode (right icon)
Connect USB to device and computer


On the computer


Download and run Odin 1.85 (This is important because diff versions of Odin support diff files)
Check off PDA and select the above tar file
Click start (3 boxes should be checked, 2 default and PDA)


The Odin software will then transfer the stock firmware to the device and shut off when the transfer is finished. User must boot up the device again. When the device boots up, it will automatically install the firmware. The device is now officially unbricked.