There are options flashable from custom recovery (CWM, TWRP) or, if you'd rather, via Odin. They are built from the 12/17/2013 stock OTA for the AT&T I317 in all their bloated glory.
**They do not include the MK6 bootloader or tz files **
** IF YOU ARE ALREADY ON THE MK6 BOOTLOADER (OR ABOVE) FLASHING ANY OF THESE PACKAGES WILL TRIP THE KNOX COUNTER **
These packages are intended only for the AT&T version of the Note 2 and include the modem and kernel for this phone. Flashing on any other North American Note 2 will result in a soft brick and require a re-flash of the modem/kernel specific to your phone. Flashing on any other phone will likely require a complete reflash of your phone's stock firmware to recover - do not attempt. The other standard disclaimers apply - while these packages have been tested and work on the AT&T i317, you assume all risk in flashing.
First a word on the MK6 bootloader - it has been reported that it is "locked". This is only partially true. If it were completely locked, we would be unable to flash custom recovery or kernel files from download mode - as is the case with the AT&T Note 3. What the MK6 bootloader prevents is downgrading the bootloader to any prior version. So, if we're going to call it locked, it's a "bootloader revert lock" but not a "firmware flash lock". A pain in the a$$, particularly if you want to revert your phone to 4.1.2 stock, clear the download counter with triangle away, unroot, and have your phone looking the same as it did on day one.
The main issue with the MK6 bootloader - If your phone is still covered by warranty: The MK6 bootloader implements one of the Samsung KNOX Secure Boot components: an "e-fuse" that gets set to "1" as soon as you flash something custom on your phone. Once set (so far anyway) this cannot be reset to "0". If this flag is tripped, a service center may use this to deny warranty repair coverage.
Given this, taking the OTA is not recommended for anyone thinking of flashing custom firmware at any time in the future. With that in mind, there is no MK6 bootloader or tz file in these packages. However, a 4.3 bootloader is needed in order for wifi to function. Fortunately we have a 4.3 bootloader available that permits revert to lower versions courtesy of the leaked MJ4 firmware provided by designgears. It is provided here to complete the install.
Here is what you have available:
All firmware packages include the system firmware, kernel, and modem from UCUBMK6. They are rooted with the as of Dec '13 current version of Chainfire's SuperSU. They include Linus Yang's build of busybox. They do not include recovery, bootloader or tz (you install the last two separately via Odin if needed)
All packages completely replace the contents of the system partition. If you are coming from another stock-based i317 firmware wipes should not be necessary.
**NOTE** Odin ZIP packages should be unzipped ONCE. The extracted MD5 file should be placed in the PDA slot in the Odin app. Do not change any other options. If the phone shows up on top as COMn and the MD5 checks out OK in the status window, you are good to click Start. **
AT&T UCUBMK6 i317 *Odexed* Stock CWM Note 2
AT&T UCUBMK6 i317 *Deodexed* Stock CWM Note 2
AT&T UCUBMK6 i317 *Odexed* Stock ODIN Note 2
If you *are not* running Official 4.3 (MK6) or newer bootloader:
After flashing one of the firmware packages above flash the bootloader package below in Odin to get wifi working (sorry, no option available for CWM/TWRP). I've included the Odin executable just after if needed.
Bootloader needs to be flashed only once. See post #2 for information on how to check what version of bootloader you have installed.
** Warning - do not attempt to flash MJ4 bootloaders if you already have the MK6 bootloaders - this will soft brick your phone - see post #2 for more **
AT&T i317 ODIN 4.3 UCUBMJ4 (Leak) Bootloader & TZ (AT&T Note 2 ONLY)
If you *are* running the Official 4.3 (MK6) bootloader:
After flashing one of the stock packages, you may need to flash the MK6 tz.img and optionally the param.bin from the MJ4 leak. This is likely to be so if you are on the MK6 bootloader and have previously reverted to 4.1 firmware. The zip below contains two Odin packages. If after flashing the stock package and you are on the MK6 bootloader, try flashing the tz only package first (in Odin), then the tz+param package to see if this gets your phone to boot. You may also need to boot recovery and do a factory reset.
AT&T i317 ODIN 4.3 UCUBMK6 TZ.IMG & UCUBMJ4 (Leak) PARAM.BIN (AT&T Note 2 ONLY)
Need Odin ? --> Odin 3.07
For completeness's sake I've included separate packages for the ucubmk6 modem and stock kernel & recovery.
CWM AT&T i317 UCUBMK6 Stock *Modem* Note 2
CWM AT&T i317 UCUBMK6 Stock *Kernel* Note 2
CWM AT&T i317 UCUBMK6 Stock *Recovery* Note 2
Here are links to custom recoveries specific to the I317 (AT&T Note 2):
PhilZ Advanced CWM Edition
*** After you boot the phone, run the SuperSU app. You will be asked if you want to disable Knox. Your best course of action here is to answer yes.
• Thanks to Chainfire for SuperSu - we wouldn't have root access on 4.3 without his work (we should all be donating to him or buying his pro version)
• Thanks to designgears for the initial 4.3 leak, which gave us the 4.3 bootloader/tz allowing revert to earlier bootloaders
• Thanks to Linus Yang for the busybox build
• Thanks to dicksteele for helping test odex & odin packages