Trying to get root, so I am downgrading the firmware, I have had nothing but trouble with it thus far, though. Any help would be appreciated. SM-G955U - US Cellular VersionG955USQS3CRE2Bootloader Version 3Android 8.0.0History of the phone, tried rooting quite a while ago, softbricked it, then went back to stock rom no problem. Flash forward a few months later, used the SamFail and PartCyborgRom method to have root, did not have mobile data, though, so I went back to stock, again. I was told after a bit that updating the modem would have fixed that issue, but oh well. Now, I want to use the SamFail mehtod to have root again, and fix the modem issue in the phone. I am trying to downgrade the firmware so that this will work. However nothing is working properly.List of all firmwares I have tried:USC-G955USQU1AQDE-20170505162155USC-G955USQU1AQD9-20170421124057SM-G955U_1_20170504154313_jk5541apkz_facSM-G955U_1_20170620081840_8g9ali6ocz_facSM-G955U1_1_20170428100826_id2grime7e_facI have uninstalled the Samsung Drivers, rebooted and reinstalled, same for ADB. I have enabled USB Debugging. I can not enable OEM Unlock, locked bootloader. For the Odin settings I have tried loading just AP. Then All of them. Then everything except for BL. Then all except for CSC.The options I have checked are Auto Reboot and F. Reset Time.This is the Odin Log:<ID:0/004> Odin engine v(ID:3.1301)..<ID:0/004> File analysis..<ID:0/004> Total Binary size: 4429 M<ID:0/004> SetupConnection..<ID:0/004> Initialzation..<ID:0/004> Set PIT file..<ID:0/004> DO NOT TURN OFF TARGET!!<ID:0/004> Get PIT for mapping..<ID:0/004> Firmware update start..<ID:0/004> NAND Write Start!! <ID:0/004> SingleDownload.<ID:0/004> boot.img<ID:0/004> FAIL! (Auth)<ID:0/004> <ID:0/004> Complete(Write) operation failed.<OSM> All threads completed. (succeed 0 / failed 1)This is what it says on my phone in DL mode:CARRIER: USCRPMB fuse blownRPMB PROVISIONEDCURRENT BINARY: Samsung OfficialSYSTEM STATUS: OfficialFRP LOCK: OFFWARRANTY VOID: 0x0QUALCOM SECUREBOOT: ENABLERP SWREV: B3(184.108.40.206.1) K2 S3SECURE DOWNLOAD: ENABLEDID 205EBC0B1B52SW REV CHECK FAIL : (boot)Fused 2 > Binary 1My phone still works just fine, have not bricked it trying all of these. I am open to all suggestions at this point. I know I had the stock firmware at one point in time, and I am trying to find it at any cost.