No messages. No photos. No notes.
The error message highlights a specific configuration mismatch: Identifies the device generation.
With a repack, you have no access to official support, and you cannot safely apply updates that fix bugs and add new features.
Security software frequently quarantines or deletes the 'loader' because it tries to manipulate the phone's core software in a way that looks malicious. This "false positive" is extremely common.
Exploit tools rely heavily on low-level USB filters. If the computer's connection drops during the file handoff, the software assumes the loader file is missing. Uninstall old Apple drivers via the Windows Control Panel.
Outdated or incompatible USB drivers are a frequent cause of communication errors between UnlockTool and iPhones in DFU mode.