On February 8, 2008, Hotz developed the software unlock for the iPhone's new Bootloader Version 4.6 that was previously only achievable with a "testpoint based hardware unlock".

On July 3, 2009, Hotz announced purplera1n, the first public software exploit for jailbreaking the iPhone 3GS. Details were posted on his blog.

On October 11, 2009, at 3:33AM Hotz released blackra1n, a jailbreak for all iPhones and iPod Touches. The only caveat was that the iPod touch third generation would need a "tethered jailbreak" to work.

On October 25, 2009 Hotz released Blackra1n RC2, an update to his previous blackra1n utility. This version allows MC Model iPod Touch 2G (8GB iPod Touch third generation) and new-bootrom iPhone 3GS users to jailbreak their iPod touches as well. (tethered jailbreak only)

On October 31, 2009, Hotz announced the impending release of Blackra1n RC3, this version will include blacksn0w which will allow SIM unlock of all iPhones using Blacksn0w RC1. Blacksn0w was originally scheduled for release on November 4, 2009, but due to positive test results it was moved to the 3rd. Blacksn0w was the #1 trending topic on Twitter as requested by GeoHot only moments after its release.

On March 27, 2010, Hotz established a website for his newest jailbreak software, limera1n. Limera1n was rumored to be his newest jailbreaking tool and was released, however, it was later found that Hotz registered another domain at the same time, rubyra1n.com. It is still unknown if rubyra1n will ever be released.

On June 24, 2010, Hotz wrote on Twitter that he had no plans to release a new jailbreak. He has told people looking for a jailbreak release to 'keep an eye on Spirit, the currently used program for 3.1.x jailbreaking, which lead to the belief there are plans to update the software to allow iOS 4.0 jailbreaking. This however has not had a release date confirmed.

On July 10, 2010, Hotz published that he had been able to jailbreak an iPhone 4 running iOS 4.0. As evidence, he provided a picture of the device executing Cydia. This post has since been edited and blocked from public view, in which Hotz stated that the picture was "quite obviously fake", addressing himself to "the haters".

On July 13, 2010, Hotz announced his retirement from iDevices hacking, saying that it's not fun as it used to be, and people were taking too serious something he used to do just as a distraction.
On October 8, 2010, Hotz confirmed he was releasing a Jailbreak on 10/11/10; one day after the release of GreenPois0n. He also posted a picture of limera1n running on an iPhone 3G S, iPod Touch fourth generation, iPhone 4 and on the iPad.

On October 9, 2010, Hotz released limera1n Beta 1 - without support for the 3GS (due to a problem with the bootrom). Additionally, the exploit has been found to be moderately buggy, even on supported devices. This suspended the release of the SHAtter exploit in the form of greenpois0n, due for release the next day. On the limera1n website, he claims this was to make the Chronic Dev team "do the right thing" - presumably implying that they should save their jailbreak exploit for fifth generation devices. He later went on to release three more betas, containing support for iPhone 3GS models, along with various bug fixes and other stability enhancements.
On October 11, 2010, Hotz released what appears to be the final version of his jailbreak (RC1b). Hotz also put on his website that the Mac version of this jailbreak is "coming in 7 years".

On January 26, 2010, Hotz released the exploit to the public. It requires the OtherOS function of the machine, and consists of a Linux kernel module and gaining control of the machine's hypervisor via bus glitching. Hotz wrote that "Sony may have difficulty patching the exploit". On March 28, 2010, Sony has responded by announcing to release a PlayStation 3 firmware update that removes the OtherOS feature, a feature that was already absent on the newer Slim revisions of the machine. This generated an uproar by the PlayStation 3 community. Hotz had then announced plans of a custom firmware, similar to the custom firmware for the PlayStation Portable, to enable Linux and OtherOS support, while still retaining the features of newer firmwares.

As of April 7, 2010, Hotz had posted a video on the internet detailing his supposed progress with custom firmware on the machine, and showing a PlayStation 3 running and having the OtherOS feature enabled on firmware 3.21. He had named his custom firmware as 3.21OO, and said it may work on newer Slim models of the console, as the feature was removed altogether with the launch of the newer revision. However, he had never announced a release date for the alleged firmware nor had he mentioned whether he was working on the same hack for the latest firmware version of 3.41.
On July 13, 2010, Hotz posted a message on his Twitter account stating that he was giving up trying to crack the PS3 any further.

In late August 2010, a team known as PS3 Jailbreak released a development board, replicating the work of an official Sony JIG service board. This development board put the PlayStation 3 into service mode, thus allow the installation of 3rd party packages. This enabled the running of unofficial third party ("homebrew") applications, and Sony responded to the exploitation of such loopholes in the console's security by releasing countless firmware updates. The latest update being 3.55, a console at 3.50 can be downgraded to an applicable firmware capable of accepting such boards.

On December 30, 2010, following a presentation at Chaos Communication Congress where new vulnerabilities were published, Hotz released "dePKG", a firmware package decrypter for the Playstation 3.
On January 6, 2011, he shows a demo of running homebrew applications on PS3 firmware 3.55 without using any jailbreak usb dongles.

On January 7, 2011, he showed off a demo video running homebrew applications on PlayStation 3 custom firmware 3.55.

On January 8, 2011, he released his custom firmware which runs on ps3's firmware 3.55. He also said he was releasing a Pkg signer too soon.