Download fails immediately on Apple IPSW (updates.cdn-apple.com) after Add dialog shows Ready

[aliafshany]

Summary

Downloading a large Apple IPSW from updates.cdn-apple.com ends in Failed as soon as download starts. The Add download (properties / location) dialog first reports the link as Ready with no error; failure only appears after pressing Start downloading.

URL

https://updates.cdn-apple.com/2026SummerFCS/fullrestores/140-58447/B097FD44-AF14-43CE-BEC0-CE218A859ADC/iPhone17,2_26.6_23G71_Restore.ipsw

• Host: updates.cdn-apple.com
• File: iPhone17,2_26.6_23G71_Restore.ipsw (multi‑GB firmware restore package)

Steps to reproduce

1. Copy / add the IPSW URL above into Firelink.
2. Open the properties / location (Add download) window.
3. Observe status: link resolves as Ready (filename / size appear OK; no error).
4. Confirm destination and press Start downloading.

Expected behavior

• Download should start (or resume) and progress normally, or show a clear, actionable error if the remote rejects the request (HTTP status, auth, range support, etc.).

Actual behavior

1. Add / properties window: Ready — no problem reported.
2. After Start downloading: entry immediately goes to Failed state.
3. No successful transfer; failure happens at start rather than mid-download.

Notes

• Metadata probe / preflight in the Add dialog appears to succeed (Ready), but the actual aria2 (or transfer) start path fails.
• Possible angles (unconfirmed):
  • Large file / long path or special characters (comma in iPhone17,2_…)
  • Apple CDN headers, redirects, or range-request behavior differing between HEAD/metadata and GET
  • User-Agent / missing headers required only on the real download request
  • Timeout or connection limits on multi‑GB start
• Would help debugging: full error text from the Failed row / logs (aria2 error code/message) if available in UI or log file.

Environment

• App: Firelink (desktop)
• OS: macOS
• Scenario: direct HTTPS download of Apple full-restore IPSW from updates.cdn-apple.com

Happy to attach screenshots, Firelink logs, or try a debug build if useful.

[nimbold]

Hi,
I produced the exact steps and mine is downloading without any issue:

Please Follow these steps:

• Tools > Logs > Clear all and Then Start a new log
• Start reproducing the problem: Pasting download link, and starting it
• Wait till you get the error
• Export logs and share it here so I could track where exactly the error occurs