Latest hacked AT&T carrier update adds HD Voice and other improvements

Folks with an iPhone on AT&T might be interested to hear that there’s a new hacked carrier update available that promises a number of enhancements. It’s brought to you by the same folks who created similar hacks for Sprint, Verizon and T-Mobile.

This time around, the developers say that the modded update is good for more than just speed improvements. In addition to signal enhancements and advanced HSDPA support, it also reportedly includes support for HD Voice on the iPhone 4S/5…

HD Voice (or Wideband audio) is a technology that extends the frequency range of traveling sound, essentially making your phone calls sound clearer. T-Mobile already supports the tech on the iPhone 5, and AT&T plans to join the club this year.

Joe from iTweakiOS breaks it down:

“This hack fixes the reported issue of unstable HSPA+ speeds/signal and iPadusers having trouble updating and losing all signal. This hack enables, along with the previous enabled features, HD Voice for all iPhone models running on AT&T so users can now use the UMTS/HSPA/HSPA+ network for HD qaulity calling on their 4S and 5. This hack also enables Release 7 HSDPA speeds for the iPhone 4S, giving it a new maximum theoretical downlink of 21Mbps, which AT&T does indeed support. Signal improvements from the previous release have not changed and are still present in this release along with unthrottled LTE and HSPA+. The previous band preferences have been altered this time around but not to prefer bands. It has been reprogrammed to do the following:

- “Optimize WCDMA” which will deliver the fastest available speeds without hindering the towers and other users on it.

- “Set LTE near threshold” which will also deliver the fastest available speeds that the LTE towers support.”

The usual disclaimer applies here. As before, there’s no guarantees that the modded carrier update will work for you. Your success with it will depend on several factors, including your location, population density, and your nearby cell towers.

We haven’t tried the hack out ourselves yet, but for what it’s worth we’ve noticed that a lot of our readers have seen success with the previous AT&T bundle mod, as well as other similarly-hacked carrier bundles for Verizon, T-Mobile, and Sprint.

Those wanting to try out the new hack can find step-by-step directions by clicking here. It’s compatible with the iPhone 4S and 5, and the iPad 3, 4 and mini. And for those of you who have updated to iOS 7, Joe says it’s compatible with that too.