Looks like a new ROM update has been leaked for the Verizon variation of the Samsung Galaxy SIII. Unfortunately this update, however, is not Android 4.1 Jelly Bean. When Verizon first released the Samsung Galaxy S III, it shipped with Android 4.0.4 Ice Cream Sandwich version I535VRALF2. A month after its release, new Verizon Galaxy SIII models came shipped with the I535VRALG1 ROM, which removed the universal phone search as part of Apples patent infringement.
Eventually Verizon released their first firmware update but it was as expected not 4.1 Jelly Bean. That version was I535VRALG7 and could be downloaded and installed as an over-the-air update. The main fix in this update was to resolve the “No SIM” error message that some people were experiencing. Now Verizon has a leaked update that is said to improve 4G signal strength and download/upload speeds. This new baseband radio is titled I535VRLHD. It now appears that this baseband radio was actually extracted from a new leaked ROM called I535VRALHD. This new ROM is now available for manually installation, as it includes the HD baseband radio, but also a few other improvements, such as better battery life, and comes with Google Play Magazines installed. Unfortunately, it still remains Android 4.0.4 ICS. Phone Arena has a full breakdown for conducting the update. This guide is helpful for both experienced and new manual updaters. The installation is overall pretty straight forward. Please keep in mind that DroidDog does not assume any risk for you conducting a manual update. If you do not feel comfortable doing so, perhaps you’re better off waiting until an official Verizon release of this update.