HMT Release 12.1


Go here for more information on updating your device firmware.


Release versioning and naming details can be found in the table below:

Release Version

HMT-1 Version Name

HMT-1Z1 Version Name

Release 12.1

12.1.0 or 12.1.2


The full firmware version of the device is always available in My Programs > About Device. The two feature sets are practically identical, with the only differences being the Intrinsically Safe requirements of the HMT-1Z1.

Release Highlights

  • Security – Android security patches from February 1 – April 30, 2021 have been integrated into the RealWear device firmware.
  • Bug Fixes – As with any release, bug fixes and minor enhancements are incorporated.


RealWear continually enhances the security of its devices through updates in each firmware release.

The most visible is via periodic security patch updates for the Android operating system. Each month’s Android patch set is closely analyzed by RealWear and incorporated into the code base as appropriate. (Not all patches are included as they are not relevant. For example, some patches are for different chipsets than what is used in the HMT-1 or are for mobile phones only.)

Android security patches from February 1 – April 30, 2021 have been integrated into the RealWear device firmware.

Bug Fixes

The specific bugs that have been fixed will be provided in the release notes when available. The fixes are not only to the operating system, but also to the RealWear native applications that are shipped with the operating system. Several have been incorporated directly, in response to issues discovered by the ISV partner community.

Firmware Availability and Dates


Date: HMT-1

Date: HMT-1Z1

Firmware Notice

May 28, 2021

May 28, 2021

Firmware Beta Early Access Begins

May 28, 2021

May 28, 2021

Firmware General Availability

Jun 28, 2021

Jul 12, 2021

Note: Dates are approximate and subject to change

Participating in Early Access

This release was made available for Beta Early Access beginning as outlined in the above table. To be added to the Allow List for Firmware Early Access (on no more than three devices), fill out the form here. After completing the form you will can upgrade via a Firmware Over the Air (FOTA) upgrade within one business day. If you do not receive access after than, email [email protected].

IMPORTANT: Please ensure your RealWear device(s) have the below firmware versions installed and logging is activated.

RealWear Device

Firmware Version


Either of:

  • 12.0.0-12-C.HMT-1.G
  • 12.0.2-xx-C.HMT-1.G



If you experience an unexpected result during the upgrade process, the device’s log files will detail the status of the device software and actions needed to complete the install process. Here is a guide to ensure your success during the update process.

Follow the update documentation outlined.

Providing Feedback

As always, provide complete information when contacting support to expedite the resolution process. Initiate the feedback via email with “[email protected]” in the “To” and your dedicated RealWear contact(s) + James Gordey ([email protected]) on “Cc”.

Items to include:

  • Your contact information (Email & Phone Number)
  • HMT device serial number
  • ISV software & version
  • Actual behavior
  • Expected behavior
  • Steps to reproduce the behavior
  • Helpful images & device screenshots
  • Short videos
  • Log file(s) (You can capture this via RealWear Explorer,
    • Note: For best results enter the below adb command which provides much better information to our support and Engineering team than simple logcat adb bugreport E:\Reports\MyBugReports

RealWear encourages all product feedback. Send non-bug-related product feedback via our Product Ideas portal.

Upgrading at or after General Availability

By default, the firmware will be available to all devices upon General Availability. When ready, the Release general availability will be announced across all RealWear communication channels. For specific details on how to upgrade and RealWear’s Firmware Availability Policy visit the Knowledge Center.

Frequently Asked Questions

Q: According to RealWear’s Firmware update and support policy which releases will be supported once Release 12.1 is generally available?

As outlined in the firmware policy, effective Jan 1, 2021 RealWear’s firmware support is for “N-2” releases meaning that only Releases 12, 11.2 and 11.1 are supported. Once Release 12.1 is generally available, only Releases 12.1, 12 and 11.2 will be supported.

Links and Resources

  • Prior to General Availability, all RealWear Solution Engineering and Support Teams globally will be versed on the technical details of Release 12.1. Contact your solutions engineer for support or reach out directly through the general support email, [email protected].
  • Upon product General Availability, User Guide updates and release notes are published to the RealWear Knowledge Center. The Release Notes will include step-by-step instructions on how to upgrade any device.