T-Mobile Released Android 5.0 Lollipop for HTC One M8

Beginning February 10, the HTC One (M8) received a software update to 4.20.531.4. This update provides Android 5.0 Lollipop software update.

Check the software version

1. From any Home screen, tap the Applications icon.
2. Scroll to and tap Settings.
3. Scroll down to and tap About.
4. Tap Software information.
5. View the Software number.
   4.20.531.4: Your software is up to date. There are no updates available.
   3.32.531.2, 2.22.531.6, 2.22.531.5, 1.57.531.7, 1.12.531.19, 1.27.531.11, 1.27.531.8, 1.27.531.7: Your phone can update to software version 4.20.531.4.
   Other versions: Your phone has non-T-Mobile software, and it is unsupported.

Requirements to update

• 50% or higher battery life
• Data connection
• Size of update: 634MB

Update software from the phone

1. From the Home screen, tap the Apps icon.
2. Tap Settings.
3. Tap About.
4. Tap Software update.
5. Tap Check Now and follow the on-screen prompts.
   Note: This is a large update and may take 20 minutes or more to download and install.

Source: T-Mobile Software versions & updates: HTC One (M8)