IPhone 4S due to the relatively aged hardware. In fact, some users often reported that performance on the 4S is very slow, similar to how iOS 7 ran on the iPhone 4, and suggesting that they should not upgrade due to battery draining issues and hanging up on calls. Meanwhile, Apple released iOS 8.1.1, which brought slight improvements to the phone and the iPad 2, but it still did not run as fast as newer models. On June 8, 2015, Apple announced at the WWDC that the iPhone 4S would support iOS 9. This makes it the first iPhone to support 5
IPhone Dev Team the "modem firmware" version in the iPhone Settings app.) ultrasn0w 1.2.4 (and later) uses the same AT+XAPP command exploit found in the 05.13.04 baseband to update the iPhone 3GS's baseband to version 6.15.00 (found in the iPad 3G). redsn0w is a program which allows users to jailbreak their iPod touch, iPhone and iPad by using various exploits. The first version released was 0.7 to jailbreak iOS 3.0 on the original iPhone, iPhone 3G and iPod touch 1G/2G. It is updated frequently to jailbreak additional iOS versions. PwnageTool is an iPhone jailbreaking application for Mac OS X that creates custom iOS