Update fails without the corresponding DFUServiceDelegate state update

[joonaservald]

DFU Bootloader version:

• Bonding used: no
• Library version: 4.13.0

Device information:

• Device: iPhone 12
• OS: iOS 17.1.1

Describe the bug During a firmware update with the library, I am running into a case where the update fails but the DFUServiceDelegate method dfuStateDidChange does not return the aborted case. During this case, I was logging out both state updates from dfuStateDidChange and errors from dfuError, more on that below. I would expect that if the update fails for any reason, the state would change to aborted or similar.

Logs The state and error updates come in the following order:

• DFUServiceDelegate method dfuStateDidChange update: starting
• DFUServiceDelegate method dfuStateDidChange update: enablingDfuMode
• DFUServiceDelegate method dfuError update: Error 4: Operation failed
• LoggerDelegate method logWith update: Disconnected

After this, nothing. The last known DFUServiceDelegate state update was enablingDfuMode and not aborted.

[philips77]

Hello,

This is kinda by design. I updated the doc now, but even before it was saying that whan an error is received that's all you get. The state won't change. The state goes to .aborted only when DFU was explicitly aborted using the controller.

We may think about changing that, but that would be a breaking change, I think.