Samsung has begun rolling out December’s security patch for the Galaxy Note 5, just one week after it was made available to the Galaxy S6 series. This is Google’s most recent Android security update, and it appears to be rolling out in India first.

This update weighs in at just over 71MB, SamMobile reports, and in addition to enhancing the security of your Galaxy Note 5, it promises to improve the stability of voice calls. The release comes with build number N920GDDU2AOL1, and it is being distributed over-the-air.

Samsung states that users are unable to downgrade after installing this release, so bear that in mind before proceeding with the update. We don’t see any reason why you would want to avoid this one, however.

If you live in India and you haven’t already received an update notification on your Galaxy Note 5, you can check for it manually from within the software update section in the Settings app. Alternatively, you can download and install the update manually; just follow the source link below to SamMobile.

The Galaxy Note 5 is expected to get its Android 6.0 Marshmallow upgrade early this year, adding features like Doze, improved app permissions, and a revamped TouchWiz user interface.