[Galaxy Note II Q&A, Help & Troubleshooting] kptrip:
OK. Think my head is completely red from constant facepalming..

So prior to this:

- Previously on CleanACE 4.x before making the mistake (4.2 bootloader?) - long time no flash flash

- Wanted to try Ditto Note 3

- Have a nandroid backup

- Have a backup of EFS *folder only*, from before going to 4.3 (not sure if this is of any use)

Where I screwed it:

- Hadn't read up on 4.3 stuff much

- Haphazardly flashed things thinking there is always a way to revert seeing I have backups, etc.

- Installed some of the following things (been so much stuffing around since the day she died ):

* DN3 Vegeta edition? (have a feeling this is for N7100, can't even find the thing now) - did not boot

* Flashed: MJ5BLPatch.tar.md5 and WiFi patch from here: http://xdaforums.com/showthread.php?t=2500823

* DN3 LTE edition t0lte/N7105

- After that I had working WiFi but "No SIM inserted message", no baseband version, no H/W info, no Phone info, etc. Everything relating to radio seems to be borked - IMEI is null/null also

What I have tried (was sure to remain N7105 / t0lte specific this time around):

- Flashed 4.2 stock ROM

* Flashed old modem

* Removed EFS folder / restored EFS folder

+ Same issues encountered with baseband / SIM /IMEI

- Flashed 4.3 stock ROM

* Re-flashed modem from stock .tar via CWM package and ODIN

* Re-flashed each partition using Heimdall - N7105/t0lte .PIT, Re-Format - all portions of flashing showed OK including modem, boot.img and sboot.bin

* Removed EFS folder / restored EFS folder - checking owner/permissions were set for nv_data.bin as being radio:radio

- Flashing various kernels for N7105 (no issues encountered while flashing)

- Flashing various modems for N7105 (no issues encountered while flashing)

- NAND Erase all option using stock firmware in ODIN

- Review mount points making sure EFS is being mounted - shows a mount point, folder isn't empty, seems legit

- Review EFS file/folder permissions - main concern was nv_data.bin which was root:root, changed to radio:radio

- At some point I had lost my CSC (CSC was correct in /EFS/IMEI/cantrememberfilename - showing as TEL (Telstra/Australia), this was fixed by flashing stock ROM via ODIN using CSC option

- Also tried using tools such as CDMA Workshop, QPST, Samsung Tool

* Set RMNET + DM + MODEM via *#7284#

* Tried connecting using above tools using the COM port shown under Samsung USB Modem in device manager along with all other COM ports , "No response from phone.." in CDMA Workshop / NV-items_reader_writer.exe

* QPST - I could configure the diagnostic port and add it using QPSTConfig but all fields would show as empty / no phone

* Tested Device Manager -> Modem -> Samsung USB Modem, tested connection in device manager dialog - connection failed

* Trying to enter *#9090# shows Service Mode screen but no options at all to select

Where I am at now:

- Stock ROM with WiFi and correct CSC

- No SIM inserted message

- Cannot turn on mobile network

- Developer mode has switched itself on (power button turns phone off directly, black overlaid box showing device info)

* H/W, Phone, Baseband, IMEI are all blank in the overlaid box

What I am thinking:

- I need to restore baseband somehow but stock restores and modem.bin are not doing the trick

Any ideas / input VERY much appreciated - at the moment it is cheap 3g phone -> WiFi hotspot -> Note 2 WiFi only - *facepalm*

Thanks heaps to anyone who may reply!