iOS-DFU-Library 4.11.0 make iOS app crash on iOS 15

[Michael.meng]

Hi Support-Team,

My iOS app crashed when I use IOS-DFU-Library 4.11.0

I attached the Xcode debug info and iPhone Analytics.

Thank you very much!

[Aleksander Nowakowski]

Hello,

Every response for a request in Secure DFU consists of "response op code" (always 0x60), "request op code" (op code of the request for which the response was sent) and the response data  The above error could only happen if the "request op code" in the response for Select Object request was Calculate Checksum, instead of Select Object. This doesn't seem right. See here github.com/.../SecureDFUControlPoint.swift

However, the lib shouldn't crash in that case, but nicely print an error. I need to fix it and ensure the response is correct. Thank you for the report!

[Michael.meng]

thanks for your reply!

This problem is fine for systems below iOS 15。