Bricked phone after trying to unroot, ODIN won't flash stock firmware

Hey guys,

this is my current situation: Phone is stuck in cyan screen with "An error has occurred while updating the device software. Use the Emergency recovery function in the Smart Switch PC software". I can't use Smart Switch because I was rooted and on "XtreStoLite Deo-Mod Edition 2.3" when the phone bricked. ODIN does recognize the phone. I used Odin3 v3.10.6.

What I did to brick it:
- Downloaded a firmware and tried to flash it to unroot the phone, following that guide
http://forum.xda-developers.com/gala...xy-s6-t3110608

Quote:

Model SM-G925F Model name GALAXY S6 Edge Country Germany Version Android 5.1.1 Changelist 5599585 Build date Wed, 12 Aug 2015 08:11:31 +0000 Product code DBT PDA G925FXXU2COH2 CSC G925FDBT2COH3

Since I was on "XtreStoLite Deo-Mod Edition 2.3" the device had the XXU2COH2 BL and stuff (I guessed)
- ODIN failed directly after NAND Write Start!!

Quote:

<ID:0/003> NAND Write Start!! <ID:0/003> <ID:0/003> Complete(Write) operation failed. <OSM> All threads completed. (succeed 0 / failed 1)

What I tried to fix the problem:
- Flashing TWRP form http://forum.xda-developers.com/gala...d-5-1-t3144866 --> Fails
-Flashing G925FXXU2COH2 stock firmware and G925FXXU2BOGB_G925FDBT2BOG8_DBT (from http://stockroms.net/file/GalaxyS6Ed...T2BOG8_DBT.zip)
- After finding this http://forum.xda-developers.com/gala...guide-t3187655 and some other threads I removed the hidden.img from both firmwares I already tried, repacked them and flashed with ODIN.
---> modified G925FXXU2BOGB_G925FDBT2BOG8_DBT fails after flashing modem
----> modified G925FXXU2COH2 fails like this:

Quote:

<ID:0/003> Initialzation.. <ID:0/003> Get PIT for mapping.. <ID:0/003> Firmware update start.. <ID:0/003> SingleDownload. <ID:0/003> boot.img <ID:0/003> NAND Write Start!! <ID:0/003> <ID:0/003> Complete(Write) operation failed. <OSM> All threads completed. (succeed 0 / failed 1) <ID:0/003> Removed!!

Sooo.. according to the guide I mentionied I would need to flash pit and Stock firmware at once like this:

Quote:

1) Get your device to download mode by using this combo "VolumeDown-Home-Power" 2) Open an UP TO DATE ODIN. 3) Find the corresponding .PIT file for your S6 EDGE. 4) Find the corresponding stock rom for your S6 EDGE. 5) Then put them into odin CORRECTLY. Rom to "AP", .pit to PIT 6) Make Sure these are checked: "Re-partition","NAND all erase" 7) Plug your device in and then press start.

But I am not sure if this is the right thing to do. Also I don't know which of the provided pits for the SM-G925F I am supposed to use? http://forum.xda-developers.com/gala...load-t3171636/ Whats the difference between them? Aaaand I'm still not sure which firmware I should be flashing :(
I would really appriciate your help..