How to update fixes and patches?

Reinstalled version 3.0 and in the new version missing the "Check for updates" option.
how to update the latest patches?

Last best ROM for this phone with most recent security fixes?

Given the age of this phone, I simply wanted to ask a question on the last, best ROM that brings this phone to the most recent Android version, and provides security fixes? The newest ROM I can find is the Carbon ROM: http://forum.xda-developers.com/myto...-2015-t3077527 based on 4.4.4, and is newer than the Virtuous ROM I have been using on this phone (4.0.3), as I believe that one of the most recent ROMS that supported TMobile wifi calling (although I'm now on Google FI). I don't use this phone as a daily driver, but I do try to keep it updated, and available as a spare.

Verizon S7E Root Issues Thread (with fixes)

Thread for INITIAL ROOT ISSUES on the Verizon S7E
Let's get a compilation of issues and fixes all in one nice area. Please add your replies below and I will try to include them here when I can.

1. WiFi credentials not saving or connecting after reboots:
Perm fix: Download a build prop editor app and edit this field --- ro.securestorage.support=true to ro.securestorage.support=false

2. Searching for service:
Temp fix: Start a phone call to anybody and it will kickstart your service
Perm fix: Some users have reported that wiping and reinstalling PE1 and re-rooting works, sometimes.

3. MMS not sending/receiving:
Temp fix: turn off WiFi and it will work temporarily
Perm fix: none yet, can someone provide full Verizon APN settings? I think they might've been wiped after root install. Sprint users reported a similar issue and provided APN settings.

4. Weird RCS Service or VoLTE Service icons that appear on the device after rooting:
Perm fix: See x3demond3x fix here

5. Laggy performance:
Perm fix: Download and install a CPU governor app such as No Frills CPU Control and set the governor to OnDemand or Interactive. Experiment with this at your own risk, some settings will work better than others.

6. Xposed not installing:
Fix: Use this custom Xposed from this post
Link to download if post gets deleted

7. Issues with ADB:
Fix: Make sure you have ADB properly installed. This guide will help you install ADB and drivers easily.

8. Bricked your phone or want to return to stock:
Fix: I recommend installing the latest Verizon firmware via Odin, courtesy of MisterXTC.

9. Phone getting hot:
Temp fix: Just let the phone sit for a while and do it's thing. Off the charger. My phone eventually calmed down and cooled off, and never heated up again.
Perm fix: return to stock. (try rooting again if you wish)

10. Unauthorized modifications have been made to your device.
Fix: Download Titanium Backup or Package Disabler Pro and disable/freeze SecurityLogAgent

More to come.