Listing as much detail as I can remember in hopes that this will help someone. Please note that since touch isn't working, I had to do all of this using a mouse. Using Odin and Bifrost, and a bunch of online tutorials and research, I have attempted to roll back the firmware version to any bootloader before 8 and was not successful. I also reinstalled OneUI6 and that didn't help. The interweb was right, the average consumer cannot roll back to a lower bootloader using the freely available tools online. I don't know if a repair center would have this ability but I suspect not. Also a thing to note is that using Bifrost to download previous versions of official Samsung firmware is not as straight forward as you may think. You need to know the exact file names in order to get results different than the most current update. You need to do a manual download. If you enter your model number and region in the "history" tab, click "check history" button, this will show all the previous versions. You can then click the download button on one of the results and if your lucky, that version is still available and will download. If it is not available, you will get a message that says it is trying to download version XXXXXX instead. I had to do that many times until I found the versions I wanted to try. Maybe registering with SAMFREW or any of these other similar websites will be easier, but you still need to make sure you have all of the correct information for your phone. If you have a firmware name already entered in the downloader tab, the file will save with that name but once you extract the zip file the proper firmware name will be there. This is something to keep in mind if you are downloading many different firmware files. From what I've been able to find from much web searches, it seems like OneUI6 is not able to recognize the Touch Screen Panel (TSP) firmware. You can confirm this by opening the dialer and dialing *#2663#. A window will appear with that information and you will see NA in many places. The only way I could find to update this was to click on the Download button that is available in this window. When I tried that, it didn't work. I've seen other searches from previous OneUI updates that suggest this may have happened before. Perhaps, the aftermarket vendors were able to figure out a way around this block and implemented it in their hardware, but then when a new update happens, the block comes back. This is only a guess. As much as I like to tinker and try to figure these things out I will have to give up this time. My window to return my screen is closing soon and I would rather try and cut my losses to get my money back for the screen. This has been a fun and frustrating learning experience. I will now be looking out for these types of issues if I decide to buy a refurbished phone in the future. Good luck to anyone going through the same problem.
