Motorola began rolling out Android 5.1 for the 2014 Moto X Pure Edition on Friday, and now U.S. carriers are preparing for its launch on regular versions of the device. Verizon begun its own Android 5.1 soak test this weekend.

Users on the XDA Developers forum started reporting the Android 5.1 soak test for Moto X handsets on Verizon on Saturday. The update weighs in at around 500MB, and it’s available now to a small number of testers as an over-the-air release.

Providing the test goes well, Verizon should be making the update available to all Moto X owners in the coming weeks. But if you’re comfortable with flashing firmwares yourself, you can download the soak test package from XDA now via the source link below and install it manually.

The update can be applied via Motorola’s stock recovery, so you do not need root access or an unlocked bootloader. If your device is already rooted, however, you will need to restore your handset to stock before flashing the Android 5.1 update.

Bear in mind, however, that soak tests are issued to a small number of users for a reason; they’re unfinished releases that could contain bugs that make them unstable, so it’s recommended you avoid using them on devices you rely on.