This was increased to 8 MiB with version 3.2 of the specification.

Each version of the specification describes its compatibility with previous versions.

There are two versions of the specification that are complementary.

The latest official version of the specification is available online.

The final version of the specification was released in January, 2011.

As this list demonstrates, the loose versions of the specification are maintained for legacy support.

The current version of the specification, , was published in September 2009.

An abridged version of the specification was made available for download on April 14, 2010 at http://www.mhltech.org.

This version of the specification has been implemented by a number of vendors and open source projects.

Model 1 QR code is an older version of the specification.