Android 4.3 I337UCUEMJ6 AT&T Galaxy S4 (SGH-I337) Leak Firmware, Odin/Heimdall Flashable

A leaked Android 4.3 firmware build I337UCUEMJ6 has also giving it’s way for AT&T Samsung Galaxy S4 (SGH-I337). A while ago, too many Android 4.3 firmware leaks has been out for AT&T’s Samsung devices, including the Galaxy S3 (SGH-I747) and Galaxy Note 2 (SGH-I317) not to mention the Galaxy S4 Active (SGH-I357) also. Beta testers, now it’s time to take some fun of what’s new behind AT&T Galaxy S4 Android 4.3 update.  Some of our sources has showed that this leak firmware are legit and it works perfect after installation, and since its already starts to surface, let’s get rollin’ and let the flashing begin. But wait, this is for beta esters only, the official OTA update will arrive soon and according to numerous  reports that we have gathered so far,  it’s going to be rolled- out beginning Novemeber 13.  But we cannot rest assured that this tentative date is legit until AT&T folks make an official announcement.

The leak firmware I337UCUEMJ6 brings the goodies of Android 4.3, and now includes the Galaxy Gear smart watch functionality support, TRIM support, Knox security suite implementation and among other stuff. But for those avid-tinkerers this firmware build also got the locked-bootloader just like the recently rolled-out I337UCUAMF3 4.2.2 update that was costs us some pain when trying to install any custom ROMs.

For those beta testers who might wanna take the plunge, you can grab the Odin or Heimdall flashable stock I337UCUEMJ6 Firmware from XDA-developers source link below. This leaked firmware is being brought to us by (@designgears).

Stock Firmware I337UCUEMJ6 Details:

Device Name: Samsung Galaxy S4 (SGH-I337)
Carrier: AT&T
Firmware Build: I337UCUEMJ6
Version: Android 4.3
Build Date: October 10, 2013
Changelist: 1849109
Download stock for Heimdall (MAC & Linux) via XDA original thread.
Download stock for Odin (Windows) I337UCUEMJ6 (thank’s to @gtj0)

I337UCUEMJ6 AT&T Galaxy S4 4.3 firmware build info
Again and again, this is not an official Android 4.3 update firmware yet. Installing unofficial or leak firmware are a bit risky. You should abide the rules how leak firmware works and this is for advanced users only. Some bug might still present so you better make a careful research first before doing any attempt to install such any leak firmware.

Note: All files will be wipe-out during the flashing process, so you should back-up all your files, including contacts, photos, videos, emails, messages and etc. Make sure the battery has been fully re-charge or at-least has still got 60% power.
Flashing with Odin: Unzip and flash with Odin PDA slot. You can get Odin and the latest USB driver for Android 4.3 from here. We have a lot of guides about Odin flashing with stock ROM here.

Flashing with Heimdall tool:  You can extract or unzip the file and flash each individual images  in a proper order like this.

Code:
sbl1.mbn
sbl2.mbn
sbl3.mbn
rpm.mbn
aboot.mbn
tz.mbn
boot.img
recovery.img
persdata.img.ext4
system.img.ext4
modem.bin
NON-HLOS.bin
cache.img.ext4
hidden.img.ext4

Conclusion:

The official 4.3 update is coming very soon but I don’t know exactly when. We have seen some Android 4.3 test firmware last month from build numbers I337UCUEMI4, I337UCUEMI5, I337UCUEMI6, I337UCUEMI9 and only this one has leaked-out, so it means that the 4.3 update is now nearly coming to the final and much stable build.

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