I have read through and watch most of the videos to solve this problem. But i have not seen an issue like this before.
i bought the phone new off ebay, after about a month of use, the touch screen went dead, can do anything. did full wipes and resets. i can access it though using a mouse.
I think i know the issue but i don't know if it is hardware (screen connection) or firmware.
In the firmware, the phone TSP version, the parts TSP version and the developer only are all N/A.
i am having exactly same problem as you have and the xaa device is oem locked and i guess we cannot really do anything about it i dont know when samsung will speak up about it should have never bought this phone samsung has always been a regret and they didnt dissapoint me this time as well
