Conversion of Note 2 from AT&T to T-Mobile and upgrade of Cyanogenmod

Steps needed to unlock and move a Note 2 phone from AT&T to T-Mobile, switch from Clockworkmod ROM Manager to TWRPi, and upgrade flash from CyanogenMod 11 to CyanogenMod 12

Caveats

Based on phone configured using Note 2 Root procedures

Carrier Unlock

Request unlock code from AT&T
- See Unlock your AT&T wireless phone or tablet for details
- Make request from the Consumer Device Unlock Portal
Revert to Stock ROM (i317-ucamh3-stock-cwm). Code failed using CyanogenMod 11
Insert new sim card and enter unlock code when prompted

Clockworkmod to TWRPi

Install using teamwin instructions
- Install TWRP Manager App since already rooted
- Start TWRP Manager and select "Install TWRP"
- Select device name
  - Samsung Galaxy Note II ATT (t0lteatt)
- Select Recovery Version to Install
  - Pick latest (2.8.5.0) from bottom of list
- Select Install Recovery

Cyanogenmod 12

Download latest cyanogenmod snapshot
- http://download.cyanogenmod.org/?device=t0lte
Download latest Google Apps¹
Move both to sdcard0/0 so they will be available to TWRPi
Reboot into recovery mode
<Up Vol>-<Home>-<Power>
Select "Wipe"
- Select swipe "Factory Reset"
Select Install
- Select /sdcard/cm-12-*
- Add more zips
- Select /sdcard/gapps-lp-*
- Swipe to Confirm Flash
- Select Reboot System

References

Multiple. “Google Apps - CyanogenMod.” Accessed February 14, 2015. http://wiki.cyanogenmod.org/w/Google_Apps.

Multiple, “Google Apps - CyanogenMod.” ↩