[Sprint Samsung Galaxy S7 Edge Guides, News, & Disc] ryan2202:
On the fly report of my attempt at this one. Sorry for the long single paragraph, was just typing as I went along. Will come back later to space it out a bit....

I flashed this directly over my rooted PE1 (no wipe). I used the CSC file, not the HOME_CSC file when flashing, and left Auto Reboot checked. It booted up fine, able to connect to wifi, completed hands free activation and updated PRL, and it rebooted again to finish setup. After booting back up, LTE was live and it checked for software updates (none found). WIFI also connected again automatically. Continued setup by adding Google acct, skipped PIN/Secure setup, and let it start through the Google Restore process. It asked for my Samsung Acct as well but I skipped that for now. If the Google restore doesnt work right I will try to restore from my Samsung acct. Made it to the home screen, Restore still running in the background. I will report back once it looks like Restore has stopped. I left USB plugged in, and MTP is working fine as well. Hotspot/Tethering, System Update, Network Mode/Type, and APNs are all there though the APNs are grayed out. Screenshot of homescreen for reference. Google Restore finished, and it installed all apps I had previously installed on rooted PE1, including the apps that require root. Confirm text messaging is working as well as I received a few during the restore. I also ran Samsung Restore which finished up some of the settings I had previously. The phone is very smooth and snappy, even while it was doing all these things in the background. I have not setup any security yet and now I will attempt to root and report back. Per Package Disabler, samsung dm phone interface, and samsung dm service are not there, but securityLogAgent is there so I disabled it. Flashed Engineering Boot with PrinceComsy ODIN. Rebooted, no LTE icon but shows I am connected to LTE, mobile state is disconnected. It also does not have a valid phone number listed in the phone number field. Checked APNs, they are blank. As I was in settings, phone rebooted, and splash screen shows "Custom" icon. After phone came back up, still no LTE icon but says its connected to the network, but mobile data still disconnected. Now to add superuser. ADB root.bat completed normally and rebooted. Root Checker confirms root access. Now I will try to add the APNs though I have never done this before so hopefully I can figure it out. Updates to come. Edited build.prop, WIFI pw is saving correctly. Having trouble adding APNs. Getting that message about the profile being restricted. Still trying. So got it to the point where I get LTE icon and LTE data works (browser, Google play, etc). I deleted the stock apns-conf.xml file and replaced it with a few others I have. But if you go into the APN settings, you still cant add the info. You can start to add one and exit, and it leaves a blank APN there and LTE works, but the APN is blank. You can try to edit it, but it won't save. and if you reset APNs to default, you lose LTE. If you leave the blank APN there and selected, LTE works but MMS is not working (screenshot of blank APN attached).

Spent enough time on it today, gonna reflash back to stock G935U because it was working pretty well. Might try to root it and figure out APNs at a later date.