

You must download xcode from the Apple App store in the Apple Dev Website.You need to have an iOS device and a lightning cable.There are some pre requirements to make this alternative method work

But the thing is you must need to know a bit about technical things. This alternative method is suggested by an reddit user with the username autumn-autumn and the method has almost proven by users after trying it, you can try this method until Saurik officially patches the error. There is an alternative method to fix Cydia impactor update to Xcode 7.3 error. If you really can not wait until the developer fixes the error, you can have an Apple developer paid account by paying $99. This has caused breaking of the cydia impactor for users with free Apple developer accounts. He says that Apple has made a change in their provisioning services in order to require a different authentication scheme for those who use free Apple accounts. Moreover he explained a little about this error. He said that this error is due to a change in the server side and he told the users to keep waiting until he gets time to resolve it as he is working with another project recently. And Jay Saurik Freeman the developer of Cydia Impactor went on a tweet to tell the users about this error. Have you ever faced an error as “please update to Xcode 7.3” when you try to sideload applications via Cydia Impactor? Do not worry because you are not the only one facing this error.
