The Android 4.4.2 KitKat software has leaked for owners of the Samsung Galaxy S4 and Note 3 devices on the AT&T cellular network.

This leaked firmware can be found on XDA developers website. However, users should beware that this leaked versions contain bootloaders, meaning that the operating system cannot be downgraded to the Android 4.3 Jelly Bean should you decide you want to remove it.

This leaked version of the Android 4.4.2 2 for the Samsung devices popped up early January and is for the Note 3 with firmware number N900AUCECMLG.

Meanwhile, Galaxy Note 3 owners in Europe who were lucky enough to be the first to receive the new Android 4.4.2 firmware update have been complaining of incompatibility issues with third party accessories since installing the new software.

Those with unofficial Note 3 smartcovers had their accessories broken after the KitKat update. The Korean electronics company announced that an update will soon be available to fix the bug and make the third-party smartcovers function again.

Samsung stated: "We have currently identified a software compatibility issue with the Galaxy Note 3 update to Android 4.4 (KitKat) and select 3rd party accessories. A software update will be available shortly. We are committed to offering a diverse and reliable mobile experience for all customers, providing continued support and solutions for any issues that arise with product updates for both Samsung manufactured and third-party accessories."

The Android 4.4 KitKat firmware update first rolled out to Samsung Galaxy Note 3 owners in Poland and Russia last week.

Although the international update to the Note 3 has already started in Europe, there is still no official word on when the firmware upgrade will be available to Galaxy S4 or S3 owners in the U.S.

Meanwhile, owners of the Samsung Galaxy S2 can upgrade to the Android 4.4.2 KitKat via an unofficial custom CyanogenMod ROM update.

A recent video shows the Galaxy S2 i900 model running on the new software.