iOS dependency is old and causes troubles on iOS

[danypata]

The current lib is pointing to iOS lib 4.5.1, latest version is 4.9. This causes a huge problem on DFU while running on iPhone 11, iOS 13.5.1.

I've forked the repo, updated the podspec to point to 4.9 and the DFU works without a problem.

[fengqiangboy]

Thx, you can make a pull request.

[n30phyte]

I think this issue can be closed. I thought it was still a problem.

[haoyuant]

I think the dependency needs to be updated again for the latest Xcode, any plan on doing this soon?