What is the difference between shift+ recovery and shift+ update in itunes?

The first iphone or ipad upgrade method: Online upgrades via itunes;

The second iphone or ipad upgrade method: Download the firmware on your own and then upgrade it offline via itunes;

The third iphone or ipad upgrade method (This method only applies to devices that are upgraded to IOS5): It is upgraded with the "Software Update" feature that is iOS5 from the iphone or ipad system. The way to do this is to click "Set", "General", "Software Update", the IOS5 system will automatically check whether there is a newer version of the firmware available, if your current firmware is the latest version, the system will show "IOS x.x.x your software is up to date." If Apple releases a new version of the firmware, click "Download and update" inside.

Warm tip: IOS5 's iphone or ipad using the "Software Update" feature to upgrade, the inspection process needs to link to the network, that is, to the cellular network to open or link to Wi-Fi, but in the process of downloading the firmware must link to the Wi-Fi environment, if the use of cellular network data, Even if you click "Download and update", the iOS system will not download the update, the system prompts you to link to Wi-Fi network.

Click here to view the iphone firmware iOS5.0 How to upgrade the detailed tutorials more easily

Let's talk about the click "Update" or "Restore" when you upgrade your iphone firmware using itunes? Many beginners will be puzzled, because a lot of people do not make it clear, in order to help beginners to solve the iphone upgrade firmware problem, here are some of the iphone upgrade knowledge to share to novice beginners. Update the iphone or ipad firmware with itunes to choose "shift+ Restore" or "shift+ update", I believe that after reading the following instructions will understand what to choose.

There are two ways to do this when using your own downloaded offline firmware to upgrade your iphone or ipad

For Windows systems, one is to hold down the SHIFT key and click the Restore button, and the other is to hold down the SHIFT key and click the "Update" button.

For a Mac system computer, press "option" to click the "Restore" button, and the other is to press "option" to click the "Update" button.

In fact, the two operations are different, in order to avoid unnecessary trouble or pay special attention to the choice.

1, "shift+ Update": Firmware updates only, retain the existing data and installed procedures. But the iphone or ipad that has escaped is forbidden to use this method! Otherwise have Sequela! An iphone or ipad without a jailbreak can use this approach directly.

2, "shift+ recovery": the iphone or ipad to clear all the information, and write the firmware. This way brush the firmware relatively clean some, of course, no jailbreak machine can also use this method, but jailbreak the iphone or ipad must be in this way.

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Object Storage Service (OSS)	Content Delivery Network (CDN)	Short Message Service (SMS)	Container Service for Kubernetes (ACK)	Data Lake Analytics (DLA)
ApsaraDB for Redis (Redis)	ApsaraDB for MongoDB (MongoDB)	NAT Gateway	VPN Gateway	Cloud Firewall
Anti-DDoS	Web Application Firewall (WAF)	Log Service	DataWorks	MaxCompute
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