Hi there! I see you're having trouble updating Jujutsu Kaisen Phantom Parade where the download gets stuck at 0 KB in the launcher. Let's work through this together.

To start, can you tell me if you’ve already tried any steps like restarting the launcher, rebooting your PC, or checking your internet connection? Also, is your internet connection stable and working fine with other apps right now?

Meanwhile, here’s a step-by-step approach you can try:

1. Check Internet Connection
Make sure your connection is stable. Try loading a webpage or streaming something to confirm.

2. Run Launcher as Administrator
Right-click the launcher icon and select “Run as administrator.” Sometimes, this helps the launcher access necessary system files to update.

3. Clear Launcher Cache or Temporary Files
Sometimes corrupted cache files cause issues like 0 KB downloads. Look for a cache folder in the launcher directory or settings and clear it. If you’re not sure, I can guide you through that.

4. Check Firewall and Antivirus Settings
Your firewall or antivirus might block the update download. Temporarily disable them and try updating again. If this works, add the launcher as an exception to these security programs.

5. Verify Disk Space
Ensure you have enough free disk space on the drive where the game is installed. Lack of space can stop the update.

6. Try a VPN or Disable VPN
If you use a VPN, try disabling it. Conversely, some users had success using a VPN to fix connection issues when the download was stuck.

7. Reinstall the Launcher
If the above don’t help, uninstall and reinstall the launcher from the official website. Make sure to back up any game data if possible.

Let’s start from step 1 and 2 to see where you stand so far. Could you please share what you’ve already tried or if any of these steps work for you? That way, I can pinpoint the next best steps.

Are you comfortable trying these? If you want, I can provide detailed instructions for any step.

Looking forward to your reply!